9913491 has 24 divisors (see below), whose sum is σ = 16679520. Its totient is φ = 5556096.

The previous prime is 9913469. The next prime is 9913507. The reversal of 9913491 is 1943199.

It is not a de Polignac number, because 9913491 - 2⁹ = 9912979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1855 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (694980).

Almost surely, 2^9913491 is an apocalyptic number.

9913491 is a deficient number, since it is larger than the sum of its proper divisors (6766029).

9913491 is a wasteful number, since it uses less digits than its factorization.

9913491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035 (or 3032 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 9913491 is about 3148.5696752653. The cubic root of 9913491 is about 214.8204088886.

It can be divided in two parts, 99134 and 91, that added together give a square (99225 = 315²).

The spelling of 9913491 in words is "nine million, nine hundred thirteen thousand, four hundred ninety-one".