11999998 has 8 divisors (see below), whose sum is σ = 18020808. Its totient is φ = 5993064.

The previous prime is 11999989. The next prime is 12000017. The reversal of 11999998 is 89999911.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (2252601).

Almost surely, 2^11999998 is an apocalyptic number.

11999998 is a deficient number, since it is larger than the sum of its proper divisors (6020810).

11999998 is a wasteful number, since it uses less digits than its factorization.

11999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938.

The product of its digits is 472392, while the sum is 55.

The square root of 11999998 is about 3464.1013264626. The cubic root of 11999998 is about 228.9428357916.

The spelling of 11999998 in words is "eleven million, nine hundred ninety-nine thousand, nine hundred ninety-eight".