977303813 has 2 divisors, whose sum is σ = 977303814. Its totient is φ = 977303812.

The previous prime is 977303771. The next prime is 977303819. The reversal of 977303813 is 318303779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691795204 + 285508609 = 26302^2 + 16897^2 .

It is an emirp because it is prime and its reverse (318303779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977303813 - 2²⁰ = 976255237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977303819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488651906 + 488651907.

It is an arithmetic number, because the mean of its divisors is an integer number (488651907).

Almost surely, 2^977303813 is an apocalyptic number.

It is an amenable number.

977303813 is a deficient number, since it is larger than the sum of its proper divisors (1).

977303813 is an equidigital number, since it uses as much as digits as its factorization.

977303813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 977303813 is about 31261.8587579178. The cubic root of 977303813 is about 992.3766363388.

The spelling of 977303813 in words is "nine hundred seventy-seven million, three hundred three thousand, eight hundred thirteen".