11879999 has 2 divisors, whose sum is σ = 11880000. Its totient is φ = 11879998.

The previous prime is 11879993. The next prime is 11880023. The reversal of 11879999 is 99997811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11879999 - 2⁸ = 11879743 is a prime.

It is a super-2 number, since 2×11879999² = 282268752480002, which contains 22 as substring.

11879999 is a modest number, since divided by 9999 gives 1187 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 11879999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11879993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5939999 + 5940000.

It is an arithmetic number, because the mean of its divisors is an integer number (5940000).

Almost surely, 2^11879999 is an apocalyptic number.

11879999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11879999 is an equidigital number, since it uses as much as digits as its factorization.

11879999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 53.

The square root of 11879999 is about 3446.7374428581. The cubic root of 11879999 is about 228.1771412434.

The spelling of 11879999 in words is "eleven million, eight hundred seventy-nine thousand, nine hundred ninety-nine".