9120249 has 16 divisors (see below), whose sum is σ = 13607040. Its totient is φ = 6037200.

The previous prime is 9120233. The next prime is 9120253. The reversal of 9120249 is 9420219.

It is not a de Polignac number, because 9120249 - 2⁴ = 9120233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

9120249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9120269) 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 15 ways as a sum of consecutive naturals, for example, 2959 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (850440).

Almost surely, 2^9120249 is an apocalyptic number.

It is an amenable number.

9120249 is a deficient number, since it is larger than the sum of its proper divisors (4486791).

9120249 is a wasteful number, since it uses less digits than its factorization.

9120249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 9120249 is about 3019.9749998965. The cubic root of 9120249 is about 208.9306867824.

The spelling of 9120249 in words is "nine million, one hundred twenty thousand, two hundred forty-nine".