3990836164 has 18 divisors (see below), whose sum is σ = 8124202590. Its totient is φ = 1710358272.

The previous prime is 3990836159. The next prime is 3990836219. The reversal of 3990836164 is 4616380993.

It can be written as a sum of positive squares in only one way, i.e., 2793122500 + 1197713664 = 52850^2 + 34608^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10180509 + ... + 10180900.

Almost surely, 2^3990836164 is an apocalyptic number.

It is an amenable number.

3990836164 is an abundant number, since it is smaller than the sum of its proper divisors (4133366426).

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

3990836164 is a wasteful number, since it uses less digits than its factorization.

3990836164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20361427 (or 20361418 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 3990836164 is about 63173.0651781279. The cubic root of 3990836164 is about 1586.1879014945.

The spelling of 3990836164 in words is "three billion, nine hundred ninety million, eight hundred thirty-six thousand, one hundred sixty-four".