977736973 has 2 divisors, whose sum is σ = 977736974. Its totient is φ = 977736972.

The previous prime is 977736917. The next prime is 977737027. The reversal of 977736973 is 379637779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 949995684 + 27741289 = 30822^2 + 5267^2 .

It is a cyclic number.

It is not a de Polignac number, because 977736973 - 2¹⁷ = 977605901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977736913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488868486 + 488868487.

It is an arithmetic number, because the mean of its divisors is an integer number (488868487).

Almost surely, 2^977736973 is an apocalyptic number.

It is an amenable number.

977736973 is a deficient number, since it is larger than the sum of its proper divisors (1).

977736973 is an equidigital number, since it uses as much as digits as its factorization.

977736973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10501974, while the sum is 58.

The square root of 977736973 is about 31268.7859214265. The cubic root of 977736973 is about 992.5232282060.

The spelling of 977736973 in words is "nine hundred seventy-seven million, seven hundred thirty-six thousand, nine hundred seventy-three".