9122491 has 4 divisors (see below), whose sum is σ = 10425712. Its totient is φ = 7819272.

The previous prime is 9122483. The next prime is 9122497. The reversal of 9122491 is 1942219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1942219 = 241 ⋅8059.

It is a cyclic number.

It is not a de Polignac number, because 9122491 - 2³ = 9122483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9122497) 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, 651600 + ... + 651613.

It is an arithmetic number, because the mean of its divisors is an integer number (2606428).

Almost surely, 2^9122491 is an apocalyptic number.

9122491 is a deficient number, since it is larger than the sum of its proper divisors (1303221).

9122491 is a wasteful number, since it uses less digits than its factorization.

9122491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303220.

The product of its digits is 1296, while the sum is 28.

The square root of 9122491 is about 3020.3461722127. The cubic root of 9122491 is about 208.9478056213.

It can be divided in two parts, 912 and 2491, that added together give a triangular number (3403 = T₈₂).

The spelling of 9122491 in words is "nine million, one hundred twenty-two thousand, four hundred ninety-one".