2199937 has 4 divisors (see below), whose sum is σ = 2253636. Its totient is φ = 2146240.

The previous prime is 2199931. The next prime is 2199941. The reversal of 2199937 is 7399912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 781456 + 1418481 = 884^2 + 1191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2199937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2199937.

It is not an unprimeable number, because it can be changed into a prime (2199931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26788 + ... + 26869.

It is an arithmetic number, because the mean of its divisors is an integer number (563409).

2^2199937 is an apocalyptic number.

It is an amenable number.

2199937 is a deficient number, since it is larger than the sum of its proper divisors (53699).

2199937 is an equidigital number, since it uses as much as digits as its factorization.

2199937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53698.

The product of its digits is 30618, while the sum is 40.

The square root of 2199937 is about 1483.2184599714. The cubic root of 2199937 is about 130.0579031996.

It can be divided in two parts, 2199 and 937, that added together give a square (3136 = 56²).

The spelling of 2199937 in words is "two million, one hundred ninety-nine thousand, nine hundred thirty-seven".