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47423 = 471009

47423 has 4 divisors (see below), whose sum is σ = 48480. Its totient is φ = 46368.

The previous prime is 47419. The next prime is 47431. The reversal of 47423 is 32474.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47423 - 22 = 47419 is a prime.

It is a Duffinian number.

47423 is a modest number, since divided by 423 gives 47 as remainder.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 47395 and 47404.

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 47423.

It is not an unprimeable number, because it can be changed into a prime (47123) 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, 458 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (12120).

247423 is an apocalyptic number.

47423 is a deficient number, since it is larger than the sum of its proper divisors (1057).

47423 is a wasteful number, since it uses less digits than its factorization.

47423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 672, while the sum is 20.

The square root of 47423 is about 217.7682254141. The cubic root of 47423 is about 36.1962024037.

Adding to 47423 its reverse (32474), we get a palindrome (79897).

It can be divided in two parts, 47 and 423, that multiplied together give a square (19881 = 1412).

The spelling of 47423 in words is "forty-seven thousand, four hundred twenty-three", and thus it is an iban number.

Divisors: 1 47 1009 47423