89579493 has 32 divisors (see below), whose sum is σ = 136442880. Its totient is φ = 58065840.

The previous prime is 89579489. The next prime is 89579527. The reversal of 89579493 is 39497598.

89579493 is a `hidden beast` number, since 89 + 5 + 79 + 493 = 666.

It is not a de Polignac number, because 89579493 - 2² = 89579489 is a prime.

It is a super-2 number, since 2×89579493² = 16048971132274098, which contains 22 as substring.

Its product of digits (2449440) is a multiple of the sum of its prime divisors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89579423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158830 + ... + 159392.

It is an arithmetic number, because the mean of its divisors is an integer number (4263840).

Almost surely, 2^89579493 is an apocalyptic number.

89579493 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

89579493 is a deficient number, since it is larger than the sum of its proper divisors (46863387).

89579493 is a wasteful number, since it uses less digits than its factorization.

89579493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 720 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 89579493 is about 9464.6443673283. The cubic root of 89579493 is about 447.4414359032.

The spelling of 89579493 in words is "eighty-nine million, five hundred seventy-nine thousand, four hundred ninety-three".