2198990 has 16 divisors (see below), whose sum is σ = 4000752. Its totient is φ = 870144.

The previous prime is 2198981. The next prime is 2199061. The reversal of 2198990 is 998912.

2198990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 164 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (250047).

2^2198990 is an apocalyptic number.

2198990 is a deficient number, since it is larger than the sum of its proper divisors (1801762).

2198990 is a wasteful number, since it uses less digits than its factorization.

2198990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 2198990 is about 1482.8991874028. The cubic root of 2198990 is about 130.0392386483.

The spelling of 2198990 in words is "two million, one hundred ninety-eight thousand, nine hundred ninety".