2169998 has 16 divisors (see below), whose sum is σ = 3356640. Its totient is φ = 1051776.

The previous prime is 2169997. The next prime is 2170039. The reversal of 2169998 is 8999612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12911 + ... + 13077.

It is an arithmetic number, because the mean of its divisors is an integer number (209790).

2^2169998 is an apocalyptic number.

2169998 is a deficient number, since it is larger than the sum of its proper divisors (1186642).

2169998 is a wasteful number, since it uses less digits than its factorization.

2169998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its digits is 69984, while the sum is 44.

The square root of 2169998 is about 1473.0913074212. The cubic root of 2169998 is about 129.4652192638.

The spelling of 2169998 in words is "two million, one hundred sixty-nine thousand, nine hundred ninety-eight".