2198979 has 12 divisors (see below), whose sum is σ = 3220776. Its totient is φ = 1445472.

The previous prime is 2198909. The next prime is 2198981. The reversal of 2198979 is 9798912.

It is not a de Polignac number, because 2198979 - 2⁸ = 2198723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2198909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1017 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (268398).

2^2198979 is an apocalyptic number.

2198979 is a deficient number, since it is larger than the sum of its proper divisors (1021797).

2198979 is a wasteful number, since it uses less digits than its factorization.

2198979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426 (or 3423 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 2198979 is about 1482.8954784475. The cubic root of 2198979 is about 130.0390218163.

The spelling of 2198979 in words is "two million, one hundred ninety-eight thousand, nine hundred seventy-nine".