2239931 has 4 divisors (see below), whose sum is σ = 2317200. Its totient is φ = 2162664.

The previous prime is 2239889. The next prime is 2239933. The reversal of 2239931 is 1399322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2239931 is a prime.

It is a super-2 number, since 2×2239931² = 10034581769522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 77239 = 2239931 / (2 + 2 + 3 + 9 + 9 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2239894 and 2239903.

It is not an unprimeable number, because it can be changed into a prime (2239933) 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, 38591 + ... + 38648.

It is an arithmetic number, because the mean of its divisors is an integer number (579300).

2^2239931 is an apocalyptic number.

2239931 is a deficient number, since it is larger than the sum of its proper divisors (77269).

2239931 is an equidigital number, since it uses as much as digits as its factorization.

2239931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77268.

The product of its digits is 2916, while the sum is 29.

The square root of 2239931 is about 1496.6399032499. The cubic root of 2239931 is about 130.8413089201.

The spelling of 2239931 in words is "two million, two hundred thirty-nine thousand, nine hundred thirty-one".