3997879031 has 2 divisors, whose sum is σ = 3997879032. Its totient is φ = 3997879030.

The previous prime is 3997879019. The next prime is 3997879049. The reversal of 3997879031 is 1309787993.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3997879031 is a prime.

It is a super-2 number, since 2×3997879031² = 31966073493018997922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997879051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998939515 + 1998939516.

It is an arithmetic number, because the mean of its divisors is an integer number (1998939516).

Almost surely, 2^3997879031 is an apocalyptic number.

3997879031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997879031 is an equidigital number, since it uses as much as digits as its factorization.

3997879031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The square root of 3997879031 is about 63228.7832478216. The cubic root of 3997879031 is about 1587.1204333286.

The spelling of 3997879031 in words is "three billion, nine hundred ninety-seven million, eight hundred seventy-nine thousand, thirty-one".