2220994 has 16 divisors (see below), whose sum is σ = 3483000. Its totient is φ = 1060864.

The previous prime is 2220979. The next prime is 2221007. The reversal of 2220994 is 4990222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2064969 + 156025 = 1437^2 + 395^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8514 + ... + 8770.

2^2220994 is an apocalyptic number.

2220994 is a deficient number, since it is larger than the sum of its proper divisors (1262006).

2220994 is a wasteful number, since it uses less digits than its factorization.

2220994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2220994 is about 1490.2999698047. The cubic root of 2220994 is about 130.4715419712.

The spelling of 2220994 in words is "two million, two hundred twenty thousand, nine hundred ninety-four".