2199290 has 24 divisors (see below), whose sum is σ = 4210812. Its totient is φ = 826880.

The previous prime is 2199277. The next prime is 2199299. The reversal of 2199290 is 929912.

It is a Cunningham number, because it is equal to 1483²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 790321 + 1408969 = 889^2 + 1187^2 .

It is not an unprimeable number, because it can be changed into a prime (2199299) 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, 2510 + ... + 3270.

2^2199290 is an apocalyptic number.

2199290 is a deficient number, since it is larger than the sum of its proper divisors (2011522).

2199290 is a wasteful number, since it uses less digits than its factorization.

2199290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 2199290 is about 1483.0003371544. Note that the first 3 decimals coincide. The cubic root of 2199290 is about 130.0451519687.

The spelling of 2199290 in words is "two million, one hundred ninety-nine thousand, two hundred ninety".