11899938 has 8 divisors (see below), whose sum is σ = 23799888. Its totient is φ = 3966644.

The previous prime is 11899933. The next prime is 11899967. The reversal of 11899938 is 83999811.

It is a sphenic number, since it is the product of 3 distinct primes.

11899938 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11899933) 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, 991656 + ... + 991667.

It is an arithmetic number, because the mean of its divisors is an integer number (2974986).

Almost surely, 2^11899938 is an apocalyptic number.

11899938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11899938 is a wasteful number, since it uses less digits than its factorization.

11899938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983328.

The product of its digits is 139968, while the sum is 48.

The square root of 11899938 is about 3449.6286756693. The cubic root of 11899938 is about 228.3047248983.

The spelling of 11899938 in words is "eleven million, eight hundred ninety-nine thousand, nine hundred thirty-eight".