2139408089 has 32 divisors (see below), whose sum is σ = 2764898304. Its totient is φ = 1608932160.

The previous prime is 2139408031. The next prime is 2139408107. The reversal of 2139408089 is 9808049312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2139408089 - 2²⁸ = 1870972633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139408989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338024 + ... + 344294.

It is an arithmetic number, because the mean of its divisors is an integer number (86403072).

Almost surely, 2^2139408089 is an apocalyptic number.

It is an amenable number.

2139408089 is a deficient number, since it is larger than the sum of its proper divisors (625490215).

2139408089 is a wasteful number, since it uses less digits than its factorization.

2139408089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 2139408089 is about 46253.7359464076. The cubic root of 2139408089 is about 1288.5399198596.

The spelling of 2139408089 in words is "two billion, one hundred thirty-nine million, four hundred eight thousand, eighty-nine".