3999180984 has 32 divisors (see below), whose sum is σ = 10161857040. Its totient is φ = 1311206400.

The previous prime is 3999180937. The next prime is 3999180989. The reversal of 3999180984 is 4890819993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999180989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364377 + ... + 1367304.

Almost surely, 2^3999180984 is an apocalyptic number.

It is an amenable number.

3999180984 is an abundant number, since it is smaller than the sum of its proper divisors (6162676056).

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

3999180984 is a wasteful number, since it uses less digits than its factorization.

3999180984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731751 (or 2731747 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 60.

The square root of 3999180984 is about 63239.0779818934. The cubic root of 3999180984 is about 1587.2927023345.

The spelling of 3999180984 in words is "three billion, nine hundred ninety-nine million, one hundred eighty thousand, nine hundred eighty-four".