9172949 has 2 divisors, whose sum is σ = 9172950. Its totient is φ = 9172948.

The previous prime is 9172913. The next prime is 9172957. The reversal of 9172949 is 9492719.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 1909924 = 2695^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 9172949 - 2⁸ = 9172693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9172049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586474 + 4586475.

It is an arithmetic number, because the mean of its divisors is an integer number (4586475).

Almost surely, 2^9172949 is an apocalyptic number.

It is an amenable number.

9172949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9172949 is an equidigital number, since it uses as much as digits as its factorization.

9172949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 9172949 is about 3028.6876696021. The cubic root of 9172949 is about 209.3323390917.

The spelling of 9172949 in words is "nine million, one hundred seventy-two thousand, nine hundred forty-nine".