11939659 has 2 divisors, whose sum is σ = 11939660. Its totient is φ = 11939658.

The previous prime is 11939621. The next prime is 11939689. The reversal of 11939659 is 95693911.

It is a strong prime.

It is an emirp because it is prime and its reverse (95693911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11939659 - 2¹⁵ = 11906891 is a prime.

It is not a weakly prime, because it can be changed into another prime (11939689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5969829 + 5969830.

It is an arithmetic number, because the mean of its divisors is an integer number (5969830).

Almost surely, 2^11939659 is an apocalyptic number.

11939659 is a deficient number, since it is larger than the sum of its proper divisors (1).

11939659 is an equidigital number, since it uses as much as digits as its factorization.

11939659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610, while the sum is 43.

The square root of 11939659 is about 3455.3811656603. The cubic root of 11939659 is about 228.5584634945.

The spelling of 11939659 in words is "eleven million, nine hundred thirty-nine thousand, six hundred fifty-nine".