3997837836 has 48 divisors (see below), whose sum is σ = 10368247680. Its totient is φ = 1332164880.

The previous prime is 3997837829. The next prime is 3997837847. The reversal of 3997837836 is 6387387993.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528795 + ... + 536301.

It is an arithmetic number, because the mean of its divisors is an integer number (216005160).

Almost surely, 2^3997837836 is an apocalyptic number.

3997837836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3997837836 is an abundant number, since it is smaller than the sum of its proper divisors (6370409844).

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

3997837836 is a wasteful number, since it uses less digits than its factorization.

3997837836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451 (or 12443 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The square root of 3997837836 is about 63228.4574855342. The cubic root of 3997837836 is about 1587.1149819671.

The spelling of 3997837836 in words is "three billion, nine hundred ninety-seven million, eight hundred thirty-seven thousand, eight hundred thirty-six".