89123429 has 4 divisors (see below), whose sum is σ = 89152140. Its totient is φ = 89094720.

The previous prime is 89123387. The next prime is 89123431. The reversal of 89123429 is 92432198.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29138404 + 59985025 = 5398^2 + 7745^2 .

It is a cyclic number.

It is not a de Polignac number, because 89123429 - 2⁸ = 89123173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89123392 and 89123401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89123329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9044 + ... + 16125.

It is an arithmetic number, because the mean of its divisors is an integer number (22288035).

Almost surely, 2^89123429 is an apocalyptic number.

It is an amenable number.

89123429 is a deficient number, since it is larger than the sum of its proper divisors (28711).

89123429 is a wasteful number, since it uses less digits than its factorization.

89123429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28710.

The product of its digits is 31104, while the sum is 38.

The square root of 89123429 is about 9440.5205894590. The cubic root of 89123429 is about 446.6808108563.

The spelling of 89123429 in words is "eighty-nine million, one hundred twenty-three thousand, four hundred twenty-nine".