172422769 has 2 divisors, whose sum is σ = 172422770. Its totient is φ = 172422768.

The previous prime is 172422709. The next prime is 172422773. The reversal of 172422769 is 967224271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172134400 + 288369 = 13120^2 + 537^2 .

It is a cyclic number.

It is not a de Polignac number, because 172422769 - 2²⁵ = 138868337 is a prime.

It is a super-2 number, since 2×172422769² = 59459222539254722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172422709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86211384 + 86211385.

It is an arithmetic number, because the mean of its divisors is an integer number (86211385).

Almost surely, 2^172422769 is an apocalyptic number.

It is an amenable number.

172422769 is a deficient number, since it is larger than the sum of its proper divisors (1).

172422769 is an equidigital number, since it uses as much as digits as its factorization.

172422769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 172422769 is about 13130.9850734817. The cubic root of 172422769 is about 556.5850519588.

The spelling of 172422769 in words is "one hundred seventy-two million, four hundred twenty-two thousand, seven hundred sixty-nine".