11993975 has 18 divisors (see below), whose sum is σ = 17302464. Its totient is φ = 8223600.

The previous prime is 11993963. The next prime is 11993987. The reversal of 11993975 is 57939911.

It is an interprime number because it is at equal distance from previous prime (11993963) and next prime (11993987).

It is not a de Polignac number, because 11993975 - 2⁶ = 11993911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3671 + ... + 6120.

It is an arithmetic number, because the mean of its divisors is an integer number (961248).

Almost surely, 2^11993975 is an apocalyptic number.

11993975 is a deficient number, since it is larger than the sum of its proper divisors (5308489).

11993975 is an equidigital number, since it uses as much as digits as its factorization.

11993975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815 (or 9803 counting only the distinct ones).

The product of its digits is 76545, while the sum is 44.

The square root of 11993975 is about 3463.2318721102. The cubic root of 11993975 is about 228.9045259667.

The spelling of 11993975 in words is "eleven million, nine hundred ninety-three thousand, nine hundred seventy-five".