977894779 has 2 divisors, whose sum is σ = 977894780. Its totient is φ = 977894778.

The previous prime is 977894741. The next prime is 977894789. The reversal of 977894779 is 977498779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977894779 - 2⁷ = 977894651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (977894789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488947389 + 488947390.

It is an arithmetic number, because the mean of its divisors is an integer number (488947390).

Almost surely, 2^977894779 is an apocalyptic number.

977894779 is a deficient number, since it is larger than the sum of its proper divisors (1).

977894779 is an equidigital number, since it uses as much as digits as its factorization.

977894779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56010528, while the sum is 67.

The square root of 977894779 is about 31271.3091986888. The cubic root of 977894779 is about 992.5766228302.

The spelling of 977894779 in words is "nine hundred seventy-seven million, eight hundred ninety-four thousand, seven hundred seventy-nine".