3997122012 has 48 divisors (see below), whose sum is σ = 11160059680. Its totient is φ = 1229883264.

The previous prime is 3997121969. The next prime is 3997122037. The reversal of 3997122012 is 2102217993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422073 + ... + 1424880.

Almost surely, 2^3997122012 is an apocalyptic number.

It is an amenable number.

3997122012 is an abundant number, since it is smaller than the sum of its proper divisors (7162937668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3997122012 is a wasteful number, since it uses less digits than its factorization.

3997122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846979 (or 2846971 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 3997122012 is about 63222.7966164104. The cubic root of 3997122012 is about 1587.0202505269.

The spelling of 3997122012 in words is "three billion, nine hundred ninety-seven million, one hundred twenty-two thousand, twelve".