89935638 has 16 divisors (see below), whose sum is σ = 193707696. Its totient is φ = 27672480.

The previous prime is 89935631. The next prime is 89935649. The reversal of 89935638 is 83653998.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89935631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576433 + ... + 576588.

It is an arithmetic number, because the mean of its divisors is an integer number (12106731).

Almost surely, 2^89935638 is an apocalyptic number.

89935638 is an abundant number, since it is smaller than the sum of its proper divisors (103772058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89935638 is a wasteful number, since it uses less digits than its factorization.

89935638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153039.

The product of its digits is 1399680, while the sum is 51.

The square root of 89935638 is about 9483.4401985777. The cubic root of 89935638 is about 448.0336224500.

The spelling of 89935638 in words is "eighty-nine million, nine hundred thirty-five thousand, six hundred thirty-eight".