977406197 has 2 divisors, whose sum is σ = 977406198. Its totient is φ = 977406196.

The previous prime is 977406119. The next prime is 977406203. The reversal of 977406197 is 791604779.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970883281 + 6522916 = 31159^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 977406197 - 2⁸ = 977405941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977408197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488703098 + 488703099.

It is an arithmetic number, because the mean of its divisors is an integer number (488703099).

Almost surely, 2^977406197 is an apocalyptic number.

It is an amenable number.

977406197 is a deficient number, since it is larger than the sum of its proper divisors (1).

977406197 is an equidigital number, since it uses as much as digits as its factorization.

977406197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 977406197 is about 31263.4962376251. The cubic root of 977406197 is about 992.4112894802.

The spelling of 977406197 in words is "nine hundred seventy-seven million, four hundred six thousand, one hundred ninety-seven".