2238942739 has 12 divisors (see below), whose sum is σ = 2468334232. Its totient is φ = 2029325760.

The previous prime is 2238942703. The next prime is 2238942749. The reversal of 2238942739 is 9372498322.

It is not a de Polignac number, because 2238942739 - 2²⁵ = 2205388307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2238942692 and 2238942701.

It is not an unprimeable number, because it can be changed into a prime (2238942749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13324 + ... + 68230.

Almost surely, 2^2238942739 is an apocalyptic number.

2238942739 is a deficient number, since it is larger than the sum of its proper divisors (229391493).

2238942739 is a wasteful number, since it uses less digits than its factorization.

2238942739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55266 (or 55255 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 2238942739 is about 47317.4675886189. The cubic root of 2238942739 is about 1308.2206362726.

The spelling of 2238942739 in words is "two billion, two hundred thirty-eight million, nine hundred forty-two thousand, seven hundred thirty-nine".