11297391 has 16 divisors (see below), whose sum is σ = 17568000. Its totient is φ = 6455064.

The previous prime is 11297387. The next prime is 11297399. The reversal of 11297391 is 19379211.

It is not a de Polignac number, because 11297391 - 2² = 11297387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11297399) 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, 4461 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (1098000).

Almost surely, 2^11297391 is an apocalyptic number.

11297391 is a deficient number, since it is larger than the sum of its proper divisors (6270609).

11297391 is an equidigital number, since it uses as much as digits as its factorization.

11297391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11003 (or 10989 counting only the distinct ones).

The product of its digits is 3402, while the sum is 33.

The square root of 11297391 is about 3361.1591750466. The cubic root of 11297391 is about 224.3844310041.

The spelling of 11297391 in words is "eleven million, two hundred ninety-seven thousand, three hundred ninety-one".