11536389 has 6 divisors (see below), whose sum is σ = 16663686. Its totient is φ = 7690920.

The previous prime is 11536379. The next prime is 11536391. The reversal of 11536389 is 98363511.

It is a happy number.

11536389 is a `hidden beast` number, since 1 + 15 + 3 + 638 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5919489 + 5616900 = 2433^2 + 2370^2 .

It is not a de Polignac number, because 11536389 - 2⁴ = 11536373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11536379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 640902 + ... + 640919.

It is an arithmetic number, because the mean of its divisors is an integer number (2777281).

Almost surely, 2^11536389 is an apocalyptic number.

It is an amenable number.

11536389 is a deficient number, since it is larger than the sum of its proper divisors (5127297).

11536389 is a wasteful number, since it uses less digits than its factorization.

11536389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281827 (or 1281824 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 11536389 is about 3396.5260193321. The cubic root of 11536389 is about 225.9556978450.

The spelling of 11536389 in words is "eleven million, five hundred thirty-six thousand, three hundred eighty-nine".