11369991 has 8 divisors (see below), whose sum is σ = 16051824. Its totient is φ = 7134080.

The previous prime is 11369983. The next prime is 11370013. The reversal of 11369991 is 19996311.

It is a happy number.

11369991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11369991 - 2³ = 11369983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11369951) 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, 111420 + ... + 111521.

It is an arithmetic number, because the mean of its divisors is an integer number (2006478).

Almost surely, 2^11369991 is an apocalyptic number.

11369991 is a deficient number, since it is larger than the sum of its proper divisors (4681833).

11369991 is a wasteful number, since it uses less digits than its factorization.

11369991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222961.

The product of its digits is 13122, while the sum is 39.

The square root of 11369991 is about 3371.9417254751. The cubic root of 11369991 is about 224.8640561516.

The spelling of 11369991 in words is "eleven million, three hundred sixty-nine thousand, nine hundred ninety-one".