11397409 has 4 divisors (see below), whose sum is σ = 11541760. Its totient is φ = 11253060.

The previous prime is 11397391. The next prime is 11397427. The reversal of 11397409 is 90479311.

11397409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11397391) and next prime (11397427).

It is a cyclic number.

It is not a de Polignac number, because 11397409 - 2²³ = 3008801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11397439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72057 + ... + 72214.

It is an arithmetic number, because the mean of its divisors is an integer number (2885440).

Almost surely, 2^11397409 is an apocalyptic number.

It is an amenable number.

11397409 is a deficient number, since it is larger than the sum of its proper divisors (144351).

11397409 is an equidigital number, since it uses as much as digits as its factorization.

11397409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144350.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 11397409 is about 3376.0048874372. The cubic root of 11397409 is about 225.0446594479.

The spelling of 11397409 in words is "eleven million, three hundred ninety-seven thousand, four hundred nine".