9409491 has 24 divisors (see below), whose sum is σ = 16729440. Its totient is φ = 4962816.

The previous prime is 9409489. The next prime is 9409529. The reversal of 9409491 is 1949049.

It is not a de Polignac number, because 9409491 - 2¹ = 9409489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9409441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4926 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (697060).

Almost surely, 2^9409491 is an apocalyptic number.

9409491 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9409491 is a deficient number, since it is larger than the sum of its proper divisors (7319949).

9409491 is a wasteful number, since it uses less digits than its factorization.

9409491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 9409491 is about 3067.4893642847. The cubic root of 9409491 is about 211.1164350663.

The spelling of 9409491 in words is "nine million, four hundred nine thousand, four hundred ninety-one".