977937979 has 2 divisors, whose sum is σ = 977937980. Its totient is φ = 977937978.

The previous prime is 977937967. The next prime is 977937991. The reversal of 977937979 is 979739779.

977937979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (977937967) and next prime (977937991).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977937979 is a prime.

It is not a weakly prime, because it can be changed into another prime (977937179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488968989 + 488968990.

It is an arithmetic number, because the mean of its divisors is an integer number (488968990).

Almost surely, 2^977937979 is an apocalyptic number.

977937979 is a deficient number, since it is larger than the sum of its proper divisors (1).

977937979 is an equidigital number, since it uses as much as digits as its factorization.

977937979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47258883, while the sum is 67.

The square root of 977937979 is about 31271.9999200563. Note that the first 4 decimals coincide. The cubic root of 977937979 is about 992.5912388127.

The spelling of 977937979 in words is "nine hundred seventy-seven million, nine hundred thirty-seven thousand, nine hundred seventy-nine".