11879985 has 16 divisors (see below), whose sum is σ = 20470464. Its totient is φ = 5848512.

The previous prime is 11879977. The next prime is 11879993. The reversal of 11879985 is 58997811.

It is an interprime number because it is at equal distance from previous prime (11879977) and next prime (11879993).

It is not a de Polignac number, because 11879985 - 2³ = 11879977 is a prime.

It is a super-2 number, since 2×11879985² = 282268087200450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30267 + ... + 30656.

It is an arithmetic number, because the mean of its divisors is an integer number (1279404).

Almost surely, 2^11879985 is an apocalyptic number.

11879985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11879985 is a deficient number, since it is larger than the sum of its proper divisors (8590479).

11879985 is a wasteful number, since it uses less digits than its factorization.

11879985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60944.

The product of its digits is 181440, while the sum is 48.

The square root of 11879985 is about 3446.7354119514. The cubic root of 11879985 is about 228.1770516115.

The spelling of 11879985 in words is "eleven million, eight hundred seventy-nine thousand, nine hundred eighty-five".