9957877 has 2 divisors, whose sum is σ = 9957878. Its totient is φ = 9957876.

The previous prime is 9957863. The next prime is 9957887. The reversal of 9957877 is 7787599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8532241 + 1425636 = 2921^2 + 1194^2 .

It is a cyclic number.

It is not a de Polignac number, because 9957877 - 2¹⁵ = 9925109 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9957887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978938 + 4978939.

It is an arithmetic number, because the mean of its divisors is an integer number (4978939).

Almost surely, 2^9957877 is an apocalyptic number.

It is an amenable number.

9957877 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957877 is an equidigital number, since it uses as much as digits as its factorization.

9957877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 52.

The square root of 9957877 is about 3155.6104005406. The cubic root of 9957877 is about 215.1405390855.

The spelling of 9957877 in words is "nine million, nine hundred fifty-seven thousand, eight hundred seventy-seven".