172300979 has 2 divisors, whose sum is σ = 172300980. Its totient is φ = 172300978.

The previous prime is 172300939. The next prime is 172301011. The reversal of 172300979 is 979003271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172300979 - 2¹⁶ = 172235443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172300939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86150489 + 86150490.

It is an arithmetic number, because the mean of its divisors is an integer number (86150490).

Almost surely, 2^172300979 is an apocalyptic number.

172300979 is a deficient number, since it is larger than the sum of its proper divisors (1).

172300979 is an equidigital number, since it uses as much as digits as its factorization.

172300979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 172300979 is about 13126.3467499529. The cubic root of 172300979 is about 556.4539740268.

The spelling of 172300979 in words is "one hundred seventy-two million, three hundred thousand, nine hundred seventy-nine".