88989431 has 4 divisors (see below), whose sum is σ = 89441352. Its totient is φ = 88537512.

The previous prime is 88989427. The next prime is 88989451. The reversal of 88989431 is 13498988.

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 88989431 - 2² = 88989427 is a prime.

It is a super-2 number, since 2×88989431² = 15838237659407522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88989431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88989401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225665 + ... + 226058.

It is an arithmetic number, because the mean of its divisors is an integer number (22360338).

Almost surely, 2^88989431 is an apocalyptic number.

88989431 is a deficient number, since it is larger than the sum of its proper divisors (451921).

88989431 is a wasteful number, since it uses less digits than its factorization.

88989431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451920.

The product of its digits is 497664, while the sum is 50.

The square root of 88989431 is about 9433.4209595459. The cubic root of 88989431 is about 446.4568354914.

The spelling of 88989431 in words is "eighty-eight million, nine hundred eighty-nine thousand, four hundred thirty-one".