977693473 has 2 divisors, whose sum is σ = 977693474. Its totient is φ = 977693472.

The previous prime is 977693447. The next prime is 977693533. The reversal of 977693473 is 374396779.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837697249 + 139996224 = 28943^2 + 11832^2 .

It is a cyclic number.

It is not a de Polignac number, because 977693473 - 2²⁵ = 944139041 is a prime.

It is not a weakly prime, because it can be changed into another prime (977690473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488846736 + 488846737.

It is an arithmetic number, because the mean of its divisors is an integer number (488846737).

Almost surely, 2^977693473 is an apocalyptic number.

It is an amenable number.

977693473 is a deficient number, since it is larger than the sum of its proper divisors (1).

977693473 is an equidigital number, since it uses as much as digits as its factorization.

977693473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6001128, while the sum is 55.

The square root of 977693473 is about 31268.0903318383. The cubic root of 977693473 is about 992.5085087051.

The spelling of 977693473 in words is "nine hundred seventy-seven million, six hundred ninety-three thousand, four hundred seventy-three".