2209998 has 24 divisors (see below), whose sum is σ = 5142312. Its totient is φ = 631344.

The previous prime is 2209997. The next prime is 2210009. The reversal of 2209998 is 8999022.

2209998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209993) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3465 + ... + 4052.

It is an arithmetic number, because the mean of its divisors is an integer number (214263).

2^2209998 is an apocalyptic number.

2209998 is an abundant number, since it is smaller than the sum of its proper divisors (2932314).

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

2209998 is a wasteful number, since it uses less digits than its factorization.

2209998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536 (or 7529 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 2209998 is about 1486.6062020589. The cubic root of 2209998 is about 130.2558668794.

The spelling of 2209998 in words is "two million, two hundred nine thousand, nine hundred ninety-eight".