3977408956 has 12 divisors (see below), whose sum is σ = 7091795592. Its totient is φ = 1951181648.

The previous prime is 3977408891. The next prime is 3977408959. The reversal of 3977408956 is 6598047793.

It is a self number, because there is not a number n which added to its sum of digits gives 3977408956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977408959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9380470 + ... + 9380893.

It is an arithmetic number, because the mean of its divisors is an integer number (590982966).

Almost surely, 2^3977408956 is an apocalyptic number.

It is an amenable number.

3977408956 is a deficient number, since it is larger than the sum of its proper divisors (3114386636).

3977408956 is a wasteful number, since it uses less digits than its factorization.

3977408956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18761420 (or 18761418 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 58.

The square root of 3977408956 is about 63066.7024348031. The cubic root of 3977408956 is about 1584.4069877032.

The spelling of 3977408956 in words is "three billion, nine hundred seventy-seven million, four hundred eight thousand, nine hundred fifty-six".