11872989 has 12 divisors (see below), whose sum is σ = 17368000. Its totient is φ = 7814664.

The previous prime is 11872961. The next prime is 11873011. The reversal of 11872989 is 98927811.

It is not a de Polignac number, because 11872989 - 2⁸ = 11872733 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 (11872789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7639 + ... + 9060.

Almost surely, 2^11872989 is an apocalyptic number.

It is an amenable number.

11872989 is a deficient number, since it is larger than the sum of its proper divisors (5495011).

11872989 is a wasteful number, since it uses less digits than its factorization.

11872989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16784 (or 16781 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 11872989 is about 3445.7203891204. The cubic root of 11872989 is about 228.1322524497.

The spelling of 11872989 in words is "eleven million, eight hundred seventy-two thousand, nine hundred eighty-nine".