11591399 has 8 divisors (see below), whose sum is σ = 12318768. Its totient is φ = 10869120.

The previous prime is 11591383. The next prime is 11591401. The reversal of 11591399 is 99319511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11591399 - 2⁴ = 11591383 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 (11591369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 6329.

It is an arithmetic number, because the mean of its divisors is an integer number (1539846).

Almost surely, 2^11591399 is an apocalyptic number.

11591399 is a deficient number, since it is larger than the sum of its proper divisors (727369).

11591399 is a wasteful number, since it uses less digits than its factorization.

11591399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545.

The product of its digits is 10935, while the sum is 38.

The square root of 11591399 is about 3404.6143687648. The cubic root of 11591399 is about 226.3142767834.

The spelling of 11591399 in words is "eleven million, five hundred ninety-one thousand, three hundred ninety-nine".