11379991 has 8 divisors (see below), whose sum is σ = 13054880. Its totient is φ = 9717408.

The previous prime is 11379989. The next prime is 11379997. The reversal of 11379991 is 19997311.

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

It is a cyclic number.

It is not a de Polignac number, because 11379991 - 2¹ = 11379989 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 (11379997) 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 7 ways as a sum of consecutive naturals, for example, 996 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (1631860).

Almost surely, 2^11379991 is an apocalyptic number.

11379991 is a deficient number, since it is larger than the sum of its proper divisors (1674889).

11379991 is an equidigital number, since it uses as much as digits as its factorization.

11379991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153.

The product of its digits is 15309, while the sum is 40.

The square root of 11379991 is about 3373.4242247307. The cubic root of 11379991 is about 224.9299600927.

The spelling of 11379991 in words is "eleven million, three hundred seventy-nine thousand, nine hundred ninety-one".