977289793 has 2 divisors, whose sum is σ = 977289794. Its totient is φ = 977289792.

The previous prime is 977289721. The next prime is 977289823. The reversal of 977289793 is 397982779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896882704 + 80407089 = 29948^2 + 8967^2 .

It is a cyclic number.

It is not a de Polignac number, because 977289793 - 2²⁵ = 943735361 is a prime.

It is not a weakly prime, because it can be changed into another prime (977289293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488644896 + 488644897.

It is an arithmetic number, because the mean of its divisors is an integer number (488644897).

Almost surely, 2^977289793 is an apocalyptic number.

It is an amenable number.

977289793 is a deficient number, since it is larger than the sum of its proper divisors (1).

977289793 is an equidigital number, since it uses as much as digits as its factorization.

977289793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12002256, while the sum is 61.

The square root of 977289793 is about 31261.6345222063. The cubic root of 977289793 is about 992.3718909066.

The spelling of 977289793 in words is "nine hundred seventy-seven million, two hundred eighty-nine thousand, seven hundred ninety-three".