8977172213 has 2 divisors, whose sum is σ = 8977172214. Its totient is φ = 8977172212.

The previous prime is 8977172173. The next prime is 8977172219. The reversal of 8977172213 is 3122717798.

8977172213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4902520324 + 4074651889 = 70018^2 + 63833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8977172213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8977172219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4488586106 + 4488586107.

It is an arithmetic number, because the mean of its divisors is an integer number (4488586107).

Almost surely, 2^8977172213 is an apocalyptic number.

It is an amenable number.

8977172213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8977172213 is an equidigital number, since it uses as much as digits as its factorization.

8977172213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 47.

The square root of 8977172213 is about 94747.9404156101. The cubic root of 8977172213 is about 2078.3236781132.

The spelling of 8977172213 in words is "eight billion, nine hundred seventy-seven million, one hundred seventy-two thousand, two hundred thirteen".