11595989 has 16 divisors (see below), whose sum is σ = 12773376. Its totient is φ = 10483200.

The previous prime is 11595971. The next prime is 11596003. The reversal of 11595989 is 98959511.

11595989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11595989 - 2¹² = 11591893 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 (11595589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88454 + ... + 88584.

It is an arithmetic number, because the mean of its divisors is an integer number (798336).

Almost surely, 2^11595989 is an apocalyptic number.

It is an amenable number.

11595989 is a deficient number, since it is larger than the sum of its proper divisors (1177387).

11595989 is a wasteful number, since it uses less digits than its factorization.

11595989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its digits is 145800, while the sum is 47.

The square root of 11595989 is about 3405.2883872001. The cubic root of 11595989 is about 226.3441450633.

The spelling of 11595989 in words is "eleven million, five hundred ninety-five thousand, nine hundred eighty-nine".