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89423 = 223401
BaseRepresentation
bin10101110101001111
311112122222
4111311033
510330143
61525555
7521465
oct256517
9145588
1089423
1161204
12438bb
1331919
1424835
151b768
hex15d4f

89423 has 4 divisors (see below), whose sum is σ = 90048. Its totient is φ = 88800.

The previous prime is 89417. The next prime is 89431. The reversal of 89423 is 32498.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32498 = 216249.

It is a cyclic number.

It is not a de Polignac number, because 89423 - 214 = 73039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 89392 and 89401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89423.

It is not an unprimeable number, because it can be changed into a prime (89413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 423.

It is an arithmetic number, because the mean of its divisors is an integer number (22512).

289423 is an apocalyptic number.

89423 is a deficient number, since it is larger than the sum of its proper divisors (625).

89423 is a wasteful number, since it uses less digits than its factorization.

89423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

The product of its digits is 1728, while the sum is 26.

The square root of 89423 is about 299.0367870346. The cubic root of 89423 is about 44.7180727918.

It can be divided in two parts, 89 and 423, that added together give a 9-th power (512 = 29).

The spelling of 89423 in words is "eighty-nine thousand, four hundred twenty-three".

Divisors: 1 223 401 89423