2139673239 has 80 divisors (see below), whose sum is σ = 3711079680. Its totient is φ = 1214922240.

The previous prime is 2139673231. The next prime is 2139673303. The reversal of 2139673239 is 9323769312.

2139673239 is a `hidden beast` number, since 21 + 396 + 7 + 3 + 239 = 666.

It is not a de Polignac number, because 2139673239 - 2³ = 2139673231 is a prime.

It is a super-2 number, since 2×2139673239² = 9156403139385502242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2139673194 and 2139673203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139673231) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1641462 + ... + 1642764.

It is an arithmetic number, because the mean of its divisors is an integer number (46388496).

Almost surely, 2^2139673239 is an apocalyptic number.

2139673239 is a deficient number, since it is larger than the sum of its proper divisors (1571406441).

2139673239 is a wasteful number, since it uses less digits than its factorization.

2139673239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442 (or 1433 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 2139673239 is about 46256.6021125633. The cubic root of 2139673239 is about 1288.5931498858.

The spelling of 2139673239 in words is "two billion, one hundred thirty-nine million, six hundred seventy-three thousand, two hundred thirty-nine".