3972972898 has 12 divisors (see below), whose sum is σ = 6108362370. Its totient is φ = 1938033920.

The previous prime is 3972972893. The next prime is 3972972911. The reversal of 3972972898 is 8982792793.

3972972898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 229613409 + 3743359489 = 15153^2 + 61183^2 .

It is not an unprimeable number, because it can be changed into a prime (3972972893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 587503 + ... + 594226.

Almost surely, 2^3972972898 is an apocalyptic number.

3972972898 is a deficient number, since it is larger than the sum of its proper divisors (2135389472).

3972972898 is a wasteful number, since it uses less digits than its factorization.

3972972898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181813 (or 1181772 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 64.

The square root of 3972972898 is about 63031.5230499787. The cubic root of 3972972898 is about 1583.8177317334.

The spelling of 3972972898 in words is "three billion, nine hundred seventy-two million, nine hundred seventy-two thousand, eight hundred ninety-eight".