2139223959 has 16 divisors (see below), whose sum is σ = 3175747840. Its totient is φ = 1423212120.

The previous prime is 2139223949. The next prime is 2139223969. The reversal of 2139223959 is 9593229312.

2139223959 is a `hidden beast` number, since 21 + 392 + 239 + 5 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (2139223949) and next prime (2139223969).

It is not a de Polignac number, because 2139223959 - 2²⁸ = 1870788503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139223949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68197 + ... + 94494.

It is an arithmetic number, because the mean of its divisors is an integer number (198484240).

Almost surely, 2^2139223959 is an apocalyptic number.

2139223959 is a deficient number, since it is larger than the sum of its proper divisors (1036523881).

2139223959 is a wasteful number, since it uses less digits than its factorization.

2139223959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163187 (or 163181 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 2139223959 is about 46251.7454697658. The cubic root of 2139223959 is about 1288.5029523663.

The spelling of 2139223959 in words is "two billion, one hundred thirty-nine million, two hundred twenty-three thousand, nine hundred fifty-nine".