922172249 has 2 divisors, whose sum is σ = 922172250. Its totient is φ = 922172248.

The previous prime is 922172233. The next prime is 922172263. The reversal of 922172249 is 942271229.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623401024 + 298771225 = 24968^2 + 17285^2 .

It is an emirp because it is prime and its reverse (942271229) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 922172249 - 2⁴ = 922172233 is a prime.

It is not a weakly prime, because it can be changed into another prime (922172219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461086124 + 461086125.

It is an arithmetic number, because the mean of its divisors is an integer number (461086125).

Almost surely, 2^922172249 is an apocalyptic number.

It is an amenable number.

922172249 is a deficient number, since it is larger than the sum of its proper divisors (1).

922172249 is an equidigital number, since it uses as much as digits as its factorization.

922172249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 922172249 is about 30367.2891282709. The cubic root of 922172249 is about 973.3536974092.

The spelling of 922172249 in words is "nine hundred twenty-two million, one hundred seventy-two thousand, two hundred forty-nine".