89919774 has 32 divisors (see below), whose sum is σ = 228368640. Its totient is φ = 25691256.

The previous prime is 89919773. The next prime is 89919779. The reversal of 89919774 is 47791998.

It is a super-2 number, since 2×89919774² = 16171131512422152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 89919774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89919773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118564 + ... + 119319.

It is an arithmetic number, because the mean of its divisors is an integer number (7136520).

Almost surely, 2^89919774 is an apocalyptic number.

89919774 is an abundant number, since it is smaller than the sum of its proper divisors (138448866).

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

89919774 is a wasteful number, since it uses less digits than its factorization.

89919774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237901 (or 237895 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 89919774 is about 9482.6037563530. The cubic root of 89919774 is about 448.0072775976.

The spelling of 89919774 in words is "eighty-nine million, nine hundred nineteen thousand, seven hundred seventy-four".