977042317 has 2 divisors, whose sum is σ = 977042318. Its totient is φ = 977042316.

The previous prime is 977042303. The next prime is 977042347. The reversal of 977042317 is 713240779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976625001 + 417316 = 31251^2 + 646^2 .

It is an emirp because it is prime and its reverse (713240779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977042317 - 2⁷ = 977042189 is a prime.

It is a super-2 number, since 2×977042317² = 1909223378417456978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 977042317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977042347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488521158 + 488521159.

It is an arithmetic number, because the mean of its divisors is an integer number (488521159).

Almost surely, 2^977042317 is an apocalyptic number.

It is an amenable number.

977042317 is a deficient number, since it is larger than the sum of its proper divisors (1).

977042317 is an equidigital number, since it uses as much as digits as its factorization.

977042317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 977042317 is about 31257.6761292326. The cubic root of 977042317 is about 992.2881187711.

The spelling of 977042317 in words is "nine hundred seventy-seven million, forty-two thousand, three hundred seventeen".