2139127679 has 8 divisors (see below), whose sum is σ = 2307676560. Its totient is φ = 1971150336.

The previous prime is 2139127643. The next prime is 2139127681. The reversal of 2139127679 is 9767219312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2139127679 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 (2139127079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135089 + ... + 150090.

It is an arithmetic number, because the mean of its divisors is an integer number (288459570).

Almost surely, 2^2139127679 is an apocalyptic number.

2139127679 is a deficient number, since it is larger than the sum of its proper divisors (168548881).

2139127679 is a wasteful number, since it uses less digits than its factorization.

2139127679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285769.

The product of its digits is 285768, while the sum is 47.

The square root of 2139127679 is about 46250.7046324702. The cubic root of 2139127679 is about 1288.4836215361.

The spelling of 2139127679 in words is "two billion, one hundred thirty-nine million, one hundred twenty-seven thousand, six hundred seventy-nine".