9964975877 has 2 divisors, whose sum is σ = 9964975878. Its totient is φ = 9964975876.

The previous prime is 9964975843. The next prime is 9964975903. The reversal of 9964975877 is 7785794699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5248857601 + 4716118276 = 72449^2 + 68674^2 .

It is a cyclic number.

It is not a de Polignac number, because 9964975877 - 2¹⁶ = 9964910341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9964975877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9964975817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982487938 + 4982487939.

It is an arithmetic number, because the mean of its divisors is an integer number (4982487939).

Almost surely, 2^9964975877 is an apocalyptic number.

It is an amenable number.

9964975877 is a deficient number, since it is larger than the sum of its proper divisors (1).

9964975877 is an equidigital number, since it uses as much as digits as its factorization.

9964975877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 71.

The square root of 9964975877 is about 99824.7257797386. The cubic root of 9964975877 is about 2151.9165083169.

The spelling of 9964975877 in words is "nine billion, nine hundred sixty-four million, nine hundred seventy-five thousand, eight hundred seventy-seven".