11969659 has 4 divisors (see below), whose sum is σ = 12890416. Its totient is φ = 11048904.

The previous prime is 11969647. The next prime is 11969669. The reversal of 11969659 is 95696911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11969659 - 2⁹ = 11969147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11969669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460359 + ... + 460384.

It is an arithmetic number, because the mean of its divisors is an integer number (3222604).

Almost surely, 2^11969659 is an apocalyptic number.

11969659 is a deficient number, since it is larger than the sum of its proper divisors (920757).

11969659 is an equidigital number, since it uses as much as digits as its factorization.

11969659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920756.

The product of its digits is 131220, while the sum is 46.

The square root of 11969659 is about 3459.7194973003. The cubic root of 11969659 is about 228.7497313543.

The spelling of 11969659 in words is "eleven million, nine hundred sixty-nine thousand, six hundred fifty-nine".