2279122839 has 50 divisors (see below), whose sum is σ = 3972154120. Its totient is φ = 1302244776.

The previous prime is 2279122837. The next prime is 2279122841. The reversal of 2279122839 is 9382219722.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2279122837) and next prime (2279122841).

It is not a de Polignac number, because 2279122839 - 2¹ = 2279122837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2279122794 and 2279122803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2279122837) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 188622 + ... + 200340.

Almost surely, 2^2279122839 is an apocalyptic number.

2279122839 is a deficient number, since it is larger than the sum of its proper divisors (1693031281).

2279122839 is an frugal number, since it uses more digits than its factorization.

2279122839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11759 (or 11729 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2279122839 is about 47740.1596038388. The cubic root of 2279122839 is about 1316.0000660178. Note that the first 4 decimals are identical.

The spelling of 2279122839 in words is "two billion, two hundred seventy-nine million, one hundred twenty-two thousand, eight hundred thirty-nine".