89964493 has 16 divisors (see below), whose sum is σ = 97478640. Its totient is φ = 82722816.

The previous prime is 89964491. The next prime is 89964529. The reversal of 89964493 is 39446998.

It can be written as a sum of positive squares in 8 ways, for example, as 14152644 + 75811849 = 3762^2 + 8707^2 .

It is not a de Polignac number, because 89964493 - 2¹ = 89964491 is a prime.

It is a super-2 number, since 2×89964493² = 16187220001494098, 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 89964493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89964491) 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, 146455 + ... + 147067.

It is an arithmetic number, because the mean of its divisors is an integer number (6092415).

Almost surely, 2^89964493 is an apocalyptic number.

It is an amenable number.

89964493 is a deficient number, since it is larger than the sum of its proper divisors (7514147).

89964493 is a wasteful number, since it uses less digits than its factorization.

89964493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its digits is 1679616, while the sum is 52.

The square root of 89964493 is about 9484.9614126785. The cubic root of 89964493 is about 448.0815331118.

The spelling of 89964493 in words is "eighty-nine million, nine hundred sixty-four thousand, four hundred ninety-three".