11399664 has 40 divisors (see below), whose sum is σ = 30011472. Its totient is φ = 3727360.

The previous prime is 11399659. The next prime is 11399671. The reversal of 11399664 is 46699311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 4784.

Almost surely, 2^11399664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11399664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15005736).

11399664 is an abundant number, since it is smaller than the sum of its proper divisors (18611808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11399664 is a wasteful number, since it uses less digits than its factorization.

11399664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545 (or 4539 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 11399664 is about 3376.3388455545. The cubic root of 11399664 is about 225.0595003134.

The spelling of 11399664 in words is "eleven million, three hundred ninety-nine thousand, six hundred sixty-four".