11959690 has 16 divisors (see below), whose sum is σ = 21582792. Its totient is φ = 4771584.

The previous prime is 11959681. The next prime is 11959693. The reversal of 11959690 is 9695911.

It can be written as a sum of positive squares in 4 ways, for example, as 11923209 + 36481 = 3453^2 + 191^2 .

It is a super-2 number, since 2×11959690² = 286068369792200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11959693) 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, 3262 + ... + 5878.

Almost surely, 2^11959690 is an apocalyptic number.

11959690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11959690 is a deficient number, since it is larger than the sum of its proper divisors (9623102).

11959690 is a wasteful number, since it uses less digits than its factorization.

11959690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 11959690 is about 3458.2784734605. The cubic root of 11959690 is about 228.6862085352.

The spelling of 11959690 in words is "eleven million, nine hundred fifty-nine thousand, six hundred ninety".