89985431 has 8 divisors (see below), whose sum is σ = 92000064. Its totient is φ = 87988320.

The previous prime is 89985409. The next prime is 89985449. The reversal of 89985431 is 13458998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89985431 - 2⁶ = 89985367 is a prime.

It is a super-2 number, since 2×89985431² = 16194755584511522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89985451) 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, 6290 + ... + 14816.

It is an arithmetic number, because the mean of its divisors is an integer number (11500008).

Almost surely, 2^89985431 is an apocalyptic number.

89985431 is a deficient number, since it is larger than the sum of its proper divisors (2014633).

89985431 is a wasteful number, since it uses less digits than its factorization.

89985431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761.

The product of its digits is 311040, while the sum is 47.

The square root of 89985431 is about 9486.0650957075. The cubic root of 89985431 is about 448.1162920227.

The spelling of 89985431 in words is "eighty-nine million, nine hundred eighty-five thousand, four hundred thirty-one".