3989195827956 has 96 divisors (see below), whose sum is σ = 10385948160000. Its totient is φ = 1324134090720.

The previous prime is 3989195827891. The next prime is 3989195827961. The reversal of 3989195827956 is 6597285919893.

3989195827956 is a `hidden beast` number, since 39 + 89 + 195 + 8 + 279 + 56 = 666.

It is a super-2 number, since 2×3989195827956² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45771901 + ... + 45858971.

It is an arithmetic number, because the mean of its divisors is an integer number (108186960000).

Almost surely, 2^{3989195827956} is an apocalyptic number.

3989195827956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3989195827956 is an abundant number, since it is smaller than the sum of its proper divisors (6396752332044).

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

3989195827956 is a wasteful number, since it uses less digits than its factorization.

3989195827956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88866 (or 88858 counting only the distinct ones).

The product of its digits is 2645395200, while the sum is 81.

It can be divided in two parts, 3989 and 195827956, that added together give a triangular number (195831945 = T₁₉₇₉₀).

The spelling of 3989195827956 in words is "three trillion, nine hundred eighty-nine billion, one hundred ninety-five million, eight hundred twenty-seven thousand, nine hundred fifty-six".