2977957897 has 2 divisors, whose sum is σ = 2977957898. Its totient is φ = 2977957896.

The previous prime is 2977957891. The next prime is 2977957937. The reversal of 2977957897 is 7987597792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2158624521 + 819333376 = 46461^2 + 28624^2 .

It is a cyclic number.

It is not a de Polignac number, because 2977957897 - 2¹⁹ = 2977433609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2977957891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1488978948 + 1488978949.

It is an arithmetic number, because the mean of its divisors is an integer number (1488978949).

Almost surely, 2^2977957897 is an apocalyptic number.

It is an amenable number.

2977957897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2977957897 is an equidigital number, since it uses as much as digits as its factorization.

2977957897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140026320, while the sum is 70.

The square root of 2977957897 is about 54570.6688340907. The cubic root of 2977957897 is about 1438.7086379650.

The spelling of 2977957897 in words is "two billion, nine hundred seventy-seven million, nine hundred fifty-seven thousand, eight hundred ninety-seven".