2199964 has 12 divisors (see below), whose sum is σ = 4146184. Its totient is φ = 1015344.

The previous prime is 2199961. The next prime is 2199971. The reversal of 2199964 is 4699912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21102 + ... + 21205.

2^2199964 is an apocalyptic number.

It is an amenable number.

2199964 is a deficient number, since it is larger than the sum of its proper divisors (1946220).

2199964 is a wasteful number, since it uses less digits than its factorization.

2199964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42324 (or 42322 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 2199964 is about 1483.2275617720. The cubic root of 2199964 is about 130.0584352678.

The spelling of 2199964 in words is "two million, one hundred ninety-nine thousand, nine hundred sixty-four".