2139213039 has 4 divisors (see below), whose sum is σ = 2852284056. Its totient is φ = 1426142024.

The previous prime is 2139213029. The next prime is 2139213103. The reversal of 2139213039 is 9303129312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2139213039 - 2⁴ = 2139213023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139213029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356535504 + ... + 356535509.

It is an arithmetic number, because the mean of its divisors is an integer number (713071014).

Almost surely, 2^2139213039 is an apocalyptic number.

2139213039 is a deficient number, since it is larger than the sum of its proper divisors (713071017).

2139213039 is an equidigital number, since it uses as much as digits as its factorization.

2139213039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713071016.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 2139213039 is about 46251.6274200163. The cubic root of 2139213039 is about 1288.5007599083.

The spelling of 2139213039 in words is "two billion, one hundred thirty-nine million, two hundred thirteen thousand, thirty-nine".