977971469 has 2 divisors, whose sum is σ = 977971470. Its totient is φ = 977971468.

The previous prime is 977971453. The next prime is 977971471. The reversal of 977971469 is 964179779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 976562500 + 1408969 = 31250^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 977971469 - 2⁴ = 977971453 is a prime.

It is a super-2 number, since 2×977971469² = 1912856388356035922, which contains 22 as substring.

Together with 977971471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977971429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488985734 + 488985735.

It is an arithmetic number, because the mean of its divisors is an integer number (488985735).

Almost surely, 2^977971469 is an apocalyptic number.

It is an amenable number.

977971469 is a deficient number, since it is larger than the sum of its proper divisors (1).

977971469 is an equidigital number, since it uses as much as digits as its factorization.

977971469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6001128, while the sum is 59.

The square root of 977971469 is about 31272.5353785074. The cubic root of 977971469 is about 992.6025692862.

The spelling of 977971469 in words is "nine hundred seventy-seven million, nine hundred seventy-one thousand, four hundred sixty-nine".