3999479400 has 144 divisors (see below), whose sum is σ = 15350431200. Its totient is φ = 914163840.

The previous prime is 3999479389. The next prime is 3999479401. The reversal of 3999479400 is 49749993.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3999479401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 146110 + ... + 171309.

Almost surely, 2^3999479400 is an apocalyptic number.

3999479400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3999479400 is an abundant number, since it is smaller than the sum of its proper divisors (11350951800).

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

3999479400 is a wasteful number, since it uses less digits than its factorization.

3999479400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317448 (or 317436 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 3999479400 is about 63241.4373650694. The cubic root of 3999479400 is about 1587.3321822313.

The spelling of 3999479400 in words is "three billion, nine hundred ninety-nine million, four hundred seventy-nine thousand, four hundred".