11939898 has 32 divisors (see below), whose sum is σ = 25731072. Its totient is φ = 3682800.

The previous prime is 11939887. The next prime is 11939903. The reversal of 11939898 is 89893911.

It is a super-2 number, since 2×11939898² = 285122328500808, which contains 22 as substring.

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, 2883 + ... + 5673.

It is an arithmetic number, because the mean of its divisors is an integer number (804096).

Almost surely, 2^11939898 is an apocalyptic number.

11939898 is an abundant number, since it is smaller than the sum of its proper divisors (13791174).

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

11939898 is a wasteful number, since it uses less digits than its factorization.

11939898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850.

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

The square root of 11939898 is about 3455.4157492261. The cubic root of 11939898 is about 228.5599885271.

The spelling of 11939898 in words is "eleven million, nine hundred thirty-nine thousand, eight hundred ninety-eight".