11001998 has 8 divisors (see below), whose sum is σ = 18860592. Its totient is φ = 4715136.

The previous prime is 11001983. The next prime is 11002001. The reversal of 11001998 is 89910011.

11001998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11001998.

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, 392915 + ... + 392942.

It is an arithmetic number, because the mean of its divisors is an integer number (2357574).

Almost surely, 2^11001998 is an apocalyptic number.

11001998 is a deficient number, since it is larger than the sum of its proper divisors (7858594).

11001998 is an equidigital number, since it uses as much as digits as its factorization.

11001998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785866.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 11001998 is about 3316.9259865122. The cubic root of 11001998 is about 222.4114734303.

The spelling of 11001998 in words is "eleven million, one thousand, nine hundred ninety-eight".