3999515416 has 32 divisors (see below), whose sum is σ = 8098896960. Its totient is φ = 1840684032.

The previous prime is 3999515393. The next prime is 3999515461. The reversal of 3999515416 is 6145159993.

It is a happy number.

3999515416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3999515416² = 31992247125643306112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17760 + ... + 91183.

It is an arithmetic number, because the mean of its divisors is an integer number (253090530).

Almost surely, 2^3999515416 is an apocalyptic number.

It is an amenable number.

3999515416 is an abundant number, since it is smaller than the sum of its proper divisors (4099381544).

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

3999515416 is a wasteful number, since it uses less digits than its factorization.

3999515416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109315 (or 109311 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 52.

The square root of 3999515416 is about 63241.7221144396. The cubic root of 3999515416 is about 1587.3369469502.

The spelling of 3999515416 in words is "three billion, nine hundred ninety-nine million, five hundred fifteen thousand, four hundred sixteen".