9749157 has 8 divisors (see below), whose sum is σ = 14180640. Its totient is φ = 5908560.

The previous prime is 9749141. The next prime is 9749161. The reversal of 9749157 is 7519479.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9749157 - 2⁴ = 9749141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9749107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147682 + ... + 147747.

It is an arithmetic number, because the mean of its divisors is an integer number (1772580).

Almost surely, 2^9749157 is an apocalyptic number.

It is an amenable number.

9749157 is a deficient number, since it is larger than the sum of its proper divisors (4431483).

9749157 is a wasteful number, since it uses less digits than its factorization.

9749157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295443.

The product of its digits is 79380, while the sum is 42.

The square root of 9749157 is about 3122.3640082476. The cubic root of 9749157 is about 213.6267768967.

The spelling of 9749157 in words is "nine million, seven hundred forty-nine thousand, one hundred fifty-seven".