9400491 has 12 divisors (see below), whose sum is σ = 14169168. Its totient is φ = 5994384.

The previous prime is 9400483. The next prime is 9400493. The reversal of 9400491 is 1940049.

It is not a de Polignac number, because 9400491 - 2³ = 9400483 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9400493) 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 11 ways as a sum of consecutive naturals, for example, 22500 + ... + 22913.

It is an arithmetic number, because the mean of its divisors is an integer number (1180764).

Almost surely, 2^9400491 is an apocalyptic number.

9400491 is a deficient number, since it is larger than the sum of its proper divisors (4768677).

9400491 is a wasteful number, since it uses less digits than its factorization.

9400491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45442 (or 45439 counting only the distinct ones).

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

The square root of 9400491 is about 3066.0220155765. The cubic root of 9400491 is about 211.0491039704.

The spelling of 9400491 in words is "nine million, four hundred thousand, four hundred ninety-one".