88928639 has 4 divisors (see below), whose sum is σ = 89042424. Its totient is φ = 88814856.

The previous prime is 88928617. The next prime is 88928657. The reversal of 88928639 is 93682988.

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 88928639 - 2²⁴ = 72151423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88928659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55712 + ... + 57285.

It is an arithmetic number, because the mean of its divisors is an integer number (22260606).

Almost surely, 2^88928639 is an apocalyptic number.

88928639 is a deficient number, since it is larger than the sum of its proper divisors (113785).

88928639 is a wasteful number, since it uses less digits than its factorization.

88928639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113784.

The product of its digits is 1492992, while the sum is 53.

The square root of 88928639 is about 9430.1982481812. The cubic root of 88928639 is about 446.3551485595.

The spelling of 88928639 in words is "eighty-eight million, nine hundred twenty-eight thousand, six hundred thirty-nine".