11637989 has 8 divisors (see below), whose sum is σ = 13105920. Its totient is φ = 10238400.

The previous prime is 11637959. The next prime is 11637991. The reversal of 11637989 is 98973611.

11637989 is digitally balanced in base 2, 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 11637989 - 2¹² = 11633893 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 (11637919) 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, 16724 + ... + 17405.

It is an arithmetic number, because the mean of its divisors is an integer number (1638240).

Almost surely, 2^11637989 is an apocalyptic number.

It is an amenable number.

11637989 is a deficient number, since it is larger than the sum of its proper divisors (1467931).

11637989 is a wasteful number, since it uses less digits than its factorization.

11637989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34171.

The product of its digits is 81648, while the sum is 44.

The square root of 11637989 is about 3411.4496918466. The cubic root of 11637989 is about 226.6170842625.

The spelling of 11637989 in words is "eleven million, six hundred thirty-seven thousand, nine hundred eighty-nine".