2239138237 has 4 divisors (see below), whose sum is σ = 2559015136. Its totient is φ = 1919261340.

The previous prime is 2239138229. The next prime is 2239138241. The reversal of 2239138237 is 7328319322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7328319322 = 2 ⋅3664159661.

It is a cyclic number.

It is not a de Polignac number, because 2239138237 - 2³ = 2239138229 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 2239138237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239138217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159938439 + ... + 159938452.

It is an arithmetic number, because the mean of its divisors is an integer number (639753784).

Almost surely, 2^2239138237 is an apocalyptic number.

It is an amenable number.

2239138237 is a deficient number, since it is larger than the sum of its proper divisors (319876899).

2239138237 is an equidigital number, since it uses as much as digits as its factorization.

2239138237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319876898.

The product of its digits is 108864, while the sum is 40.

The square root of 2239138237 is about 47319.5333556873. The cubic root of 2239138237 is about 1308.2587118443.

The spelling of 2239138237 in words is "two billion, two hundred thirty-nine million, one hundred thirty-eight thousand, two hundred thirty-seven".