89935640 has 32 divisors (see below), whose sum is σ = 204256080. Its totient is φ = 35636352.

The previous prime is 89935631. The next prime is 89935649. The reversal of 89935640 is 4653998.

It is an interprime number because it is at equal distance from previous prime (89935631) and next prime (89935649).

It is a junction number, because it is equal to n+sod(n) for n = 89935591 and 89935600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89935649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6227 + ... + 14786.

Almost surely, 2^89935640 is an apocalyptic number.

It is an amenable number.

89935640 is an abundant number, since it is smaller than the sum of its proper divisors (114320440).

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

89935640 is a wasteful number, since it uses less digits than its factorization.

89935640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21131 (or 21127 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 89935640 is about 9483.4403040247. The cubic root of 89935640 is about 448.0336257711.

The spelling of 89935640 in words is "eighty-nine million, nine hundred thirty-five thousand, six hundred forty".