9157949 has 2 divisors, whose sum is σ = 9157950. Its totient is φ = 9157948.

The previous prime is 9157931. The next prime is 9157957. The reversal of 9157949 is 9497519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8584900 + 573049 = 2930^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 9157949 - 2⁸ = 9157693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9157909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578974 + 4578975.

It is an arithmetic number, because the mean of its divisors is an integer number (4578975).

Almost surely, 2^9157949 is an apocalyptic number.

It is an amenable number.

9157949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9157949 is an equidigital number, since it uses as much as digits as its factorization.

9157949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 44.

The square root of 9157949 is about 3026.2103363778. The cubic root of 9157949 is about 209.2181737639.

The spelling of 9157949 in words is "nine million, one hundred fifty-seven thousand, nine hundred forty-nine".