9157397 has 4 divisors (see below), whose sum is σ = 9192480. Its totient is φ = 9122316.

The previous prime is 9157387. The next prime is 9157399. The reversal of 9157397 is 7937519.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7937519 = 31 ⋅256049.

It is a cyclic number.

It is not a de Polignac number, because 9157397 - 2²² = 4963093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9157399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17147 + ... + 17672.

It is an arithmetic number, because the mean of its divisors is an integer number (2298120).

Almost surely, 2^9157397 is an apocalyptic number.

It is an amenable number.

9157397 is a deficient number, since it is larger than the sum of its proper divisors (35083).

9157397 is a wasteful number, since it uses less digits than its factorization.

9157397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35082.

The product of its digits is 59535, while the sum is 41.

The square root of 9157397 is about 3026.1191318254. The cubic root of 9157397 is about 209.2139701024.

The spelling of 9157397 in words is "nine million, one hundred fifty-seven thousand, three hundred ninety-seven".