172297379 has 2 divisors, whose sum is σ = 172297380. Its totient is φ = 172297378.

The previous prime is 172297369. The next prime is 172297417. The reversal of 172297379 is 973792271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172297379 - 2²⁴ = 155520163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172297309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86148689 + 86148690.

It is an arithmetic number, because the mean of its divisors is an integer number (86148690).

Almost surely, 2^172297379 is an apocalyptic number.

172297379 is a deficient number, since it is larger than the sum of its proper divisors (1).

172297379 is an equidigital number, since it uses as much as digits as its factorization.

172297379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 47.

The square root of 172297379 is about 13126.2096204502. The cubic root of 172297379 is about 556.4500985444.

The spelling of 172297379 in words is "one hundred seventy-two million, two hundred ninety-seven thousand, three hundred seventy-nine".