11391407 has 4 divisors (see below), whose sum is σ = 11561496. Its totient is φ = 11221320.

The previous prime is 11391383. The next prime is 11391421. The reversal of 11391407 is 70419311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70419311 = 743 ⋅94777.

It is a cyclic number.

It is not a de Polignac number, because 11391407 - 2⁸ = 11391151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11391427) 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, 84944 + ... + 85077.

It is an arithmetic number, because the mean of its divisors is an integer number (2890374).

Almost surely, 2^11391407 is an apocalyptic number.

11391407 is a deficient number, since it is larger than the sum of its proper divisors (170089).

11391407 is an equidigital number, since it uses as much as digits as its factorization.

11391407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170088.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11391407 is about 3375.1158498635. The cubic root of 11391407 is about 225.0051488534.

The spelling of 11391407 in words is "eleven million, three hundred ninety-one thousand, four hundred seven".