3979801836 has 30 divisors (see below), whose sum is σ = 10403988980. Its totient is φ = 1326600504.

The previous prime is 3979801829. The next prime is 3979801867. The reversal of 3979801836 is 6381089793.

It is a super-3 number, since 3×3979801836³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6141346 + ... + 6141993.

Almost surely, 2^3979801836 is an apocalyptic number.

3979801836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3979801836 is an abundant number, since it is smaller than the sum of its proper divisors (6424187144).

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

3979801836 is a wasteful number, since it uses less digits than its factorization.

3979801836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283355 (or 12283344 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 3979801836 is about 63085.6706075159. The cubic root of 3979801836 is about 1584.7246598180.

It can be divided in two parts, 3979 and 801836, that added together give a triangular number (805815 = T₁₂₆₉).

The spelling of 3979801836 in words is "three billion, nine hundred seventy-nine million, eight hundred one thousand, eight hundred thirty-six".