2398939 has 4 divisors (see below), whose sum is σ = 2444256. Its totient is φ = 2353624.

The previous prime is 2398931. The next prime is 2398961. The reversal of 2398939 is 9398932.

It is a happy number.

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

It is not a de Polignac number, because 2398939 - 2³ = 2398931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2398895 and 2398904.

It is not an unprimeable number, because it can be changed into a prime (2398931) 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, 22579 + ... + 22684.

It is an arithmetic number, because the mean of its divisors is an integer number (611064).

2^2398939 is an apocalyptic number.

2398939 is a deficient number, since it is larger than the sum of its proper divisors (45317).

2398939 is an equidigital number, since it uses as much as digits as its factorization.

2398939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45316.

The product of its digits is 104976, while the sum is 43.

The square root of 2398939 is about 1548.8508643507. The cubic root of 2398939 is about 133.8668574317.

The spelling of 2398939 in words is "two million, three hundred ninety-eight thousand, nine hundred thirty-nine".