3999928536 has 24 divisors (see below), whose sum is σ = 10833139980. Its totient is φ = 1333309488.

The previous prime is 3999928531. The next prime is 3999928547. The reversal of 3999928536 is 6358299993.

3999928536 is a `hidden beast` number, since 3 + 9 + 9 + 9 + 92 + 8 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999928531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27777210 + ... + 27777353.

Almost surely, 2^3999928536 is an apocalyptic number.

3999928536 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3999928536 is an abundant number, since it is smaller than the sum of its proper divisors (6833211444).

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

3999928536 is a wasteful number, since it uses less digits than its factorization.

3999928536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55554575 (or 55554568 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The square root of 3999928536 is about 63244.9882283173. The cubic root of 3999928536 is about 1587.3915984095.

The spelling of 3999928536 in words is "three billion, nine hundred ninety-nine million, nine hundred twenty-eight thousand, five hundred thirty-six".