8971913 has 2 divisors, whose sum is σ = 8971914. Its totient is φ = 8971912.

The previous prime is 8971883. The next prime is 8971939. The reversal of 8971913 is 3191798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8832784 + 139129 = 2972^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 8971913 - 2⁶ = 8971849 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8971943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4485956 + 4485957.

It is an arithmetic number, because the mean of its divisors is an integer number (4485957).

Almost surely, 2^8971913 is an apocalyptic number.

It is an amenable number.

8971913 is a deficient number, since it is larger than the sum of its proper divisors (1).

8971913 is an equidigital number, since it uses as much as digits as its factorization.

8971913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 8971913 is about 2995.3151754031. The cubic root of 8971913 is about 207.7917741744.

The spelling of 8971913 in words is "eight million, nine hundred seventy-one thousand, nine hundred thirteen".