89973986 has 4 divisors (see below), whose sum is σ = 134960982. Its totient is φ = 44986992.

The previous prime is 89973971. The next prime is 89974007. The reversal of 89973986 is 68937998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68937998 = 2 ⋅34468999.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 1030225 = 9431^2 + 1015^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22493495 + ... + 22493498.

Almost surely, 2^89973986 is an apocalyptic number.

89973986 is a deficient number, since it is larger than the sum of its proper divisors (44986996).

89973986 is a wasteful number, since it uses less digits than its factorization.

89973986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44986995.

The product of its digits is 5878656, while the sum is 59.

The square root of 89973986 is about 9485.4618232324. The cubic root of 89973986 is about 448.0972929901.

The spelling of 89973986 in words is "eighty-nine million, nine hundred seventy-three thousand, nine hundred eighty-six".