2198998 has 4 divisors (see below), whose sum is σ = 3298500. Its totient is φ = 1099498.

The previous prime is 2198981. The next prime is 2199061. The reversal of 2198998 is 8998912.

It is a happy number.

2198998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 549748 + ... + 549751.

It is an arithmetic number, because the mean of its divisors is an integer number (824625).

2^2198998 is an apocalyptic number.

2198998 is a deficient number, since it is larger than the sum of its proper divisors (1099502).

2198998 is a wasteful number, since it uses less digits than its factorization.

2198998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099501.

The product of its digits is 93312, while the sum is 46.

The square root of 2198998 is about 1482.9018848191. The cubic root of 2198998 is about 130.0393963438.

The spelling of 2198998 in words is "two million, one hundred ninety-eight thousand, nine hundred ninety-eight".