9272749 has 4 divisors (see below), whose sum is σ = 9675936. Its totient is φ = 8869564.

The previous prime is 9272713. The next prime is 9272773. The reversal of 9272749 is 9472729.

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.

It is a cyclic number.

It is not a de Polignac number, because 9272749 - 2⁷ = 9272621 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9272849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201559 + ... + 201604.

It is an arithmetic number, because the mean of its divisors is an integer number (2418984).

Almost surely, 2^9272749 is an apocalyptic number.

It is an amenable number.

9272749 is a deficient number, since it is larger than the sum of its proper divisors (403187).

9272749 is a wasteful number, since it uses less digits than its factorization.

9272749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403186.

The product of its digits is 63504, while the sum is 40.

The square root of 9272749 is about 3045.1188810948. The cubic root of 9272749 is about 210.0887682164.

The spelling of 9272749 in words is "nine million, two hundred seventy-two thousand, seven hundred forty-nine".