11989659 has 16 divisors (see below), whose sum is σ = 17501184. Its totient is φ = 7240800.

The previous prime is 11989657. The next prime is 11989669. The reversal of 11989659 is 95698911.

It is not a de Polignac number, because 11989659 - 2¹ = 11989657 is a prime.

It is a super-4 number, since 4×11989659⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (11989657) 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, 13462 + ... + 14324.

It is an arithmetic number, because the mean of its divisors is an integer number (1093824).

Almost surely, 2^11989659 is an apocalyptic number.

11989659 is a deficient number, since it is larger than the sum of its proper divisors (5511525).

11989659 is a wasteful number, since it uses less digits than its factorization.

11989659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 174960, while the sum is 48.

The square root of 11989659 is about 3462.6086986548. The cubic root of 11989659 is about 228.8770657777.

The spelling of 11989659 in words is "eleven million, nine hundred eighty-nine thousand, six hundred fifty-nine".