89974201849 has 27 divisors (see below), whose sum is σ = 106298346447. Its totient is φ = 75934714464.

The previous prime is 89974201841. The next prime is 89974201861. The reversal of 89974201849 is 94810247998.

The square root of 89974201849 is 299957.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 51073740025 + 38900461824 = 225995^2 + 197232^2 .

It is not a de Polignac number, because 89974201849 - 2³ = 89974201841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89974201841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 153277734 + ... + 153278320.

Almost surely, 2^89974201849 is an apocalyptic number.

89974201849 is the 299957-th square number.

89974201849 is the 149979-th centered octagonal number.

It is an amenable number.

89974201849 is a deficient number, since it is larger than the sum of its proper divisors (16324144598).

89974201849 is an frugal number, since it uses more digits than its factorization.

89974201849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 89974201849 in words is "eighty-nine billion, nine hundred seventy-four million, two hundred one thousand, eight hundred forty-nine".