2199457 has 8 divisors (see below), whose sum is σ = 2396520. Its totient is φ = 2006400.

The previous prime is 2199433. The next prime is 2199479. The reversal of 2199457 is 7549912.

It can be written as a sum of positive squares in 4 ways, for example, as 99856 + 2099601 = 316^2 + 1449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2199457 - 2¹¹ = 2197409 is a prime.

It is a super-2 number, since 2×2199457² = 9675222189698, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2199427) 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, 207 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (299565).

2^2199457 is an apocalyptic number.

It is an amenable number.

2199457 is a deficient number, since it is larger than the sum of its proper divisors (197063).

2199457 is a wasteful number, since it uses less digits than its factorization.

2199457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its digits is 22680, while the sum is 37.

The square root of 2199457 is about 1483.0566408604. The cubic root of 2199457 is about 130.0484434841.

The spelling of 2199457 in words is "two million, one hundred ninety-nine thousand, four hundred fifty-seven".