2139475877 has 40 divisors (see below), whose sum is σ = 2770973280. Its totient is φ = 1637674080.

The previous prime is 2139475859. The next prime is 2139475883. The reversal of 2139475877 is 7785749312.

It is not a de Polignac number, because 2139475877 - 2¹⁰ = 2139474853 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 (2139475837) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1557563 + ... + 1558935.

It is an arithmetic number, because the mean of its divisors is an integer number (69274332).

Almost surely, 2^2139475877 is an apocalyptic number.

It is an amenable number.

2139475877 is a deficient number, since it is larger than the sum of its proper divisors (631497403).

2139475877 is an equidigital number, since it uses as much as digits as its factorization.

2139475877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471 (or 1450 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 53.

The square root of 2139475877 is about 46254.4687246541. The cubic root of 2139475877 is about 1288.5535290166.

The spelling of 2139475877 in words is "two billion, one hundred thirty-nine million, four hundred seventy-five thousand, eight hundred seventy-seven".