89439825 has 24 divisors (see below), whose sum is σ = 151026048. Its totient is φ = 46684480.

The previous prime is 89439817. The next prime is 89439829. The reversal of 89439825 is 52893498.

It is not a de Polignac number, because 89439825 - 2³ = 89439817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89439829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9162 + ... + 16211.

It is an arithmetic number, because the mean of its divisors is an integer number (6292752).

Almost surely, 2^89439825 is an apocalyptic number.

It is an amenable number.

89439825 is a deficient number, since it is larger than the sum of its proper divisors (61586223).

89439825 is a wasteful number, since it uses less digits than its factorization.

89439825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25433 (or 25428 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 89439825 is about 9457.2630818858. The cubic root of 89439825 is about 447.2087719479.

The spelling of 89439825 in words is "eighty-nine million, four hundred thirty-nine thousand, eight hundred twenty-five".