2170747139 has 6 divisors (see below), whose sum is σ = 2386027980. Its totient is φ = 1973406380.

The previous prime is 2170747133. The next prime is 2170747151. The reversal of 2170747139 is 9317470712.

It is a de Polignac number, because none of the positive numbers 2^k-2170747139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2170747096 and 2170747105.

It is not an unprimeable number, because it can be changed into a prime (2170747133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8969909 + ... + 8970150.

It is an arithmetic number, because the mean of its divisors is an integer number (397671330).

Almost surely, 2^2170747139 is an apocalyptic number.

2170747139 is a deficient number, since it is larger than the sum of its proper divisors (215280841).

2170747139 is a wasteful number, since it uses less digits than its factorization.

2170747139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17940081 (or 17940070 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 2170747139 is about 46591.2774991199. The cubic root of 2170747139 is about 1294.8011578842.

The spelling of 2170747139 in words is "two billion, one hundred seventy million, seven hundred forty-seven thousand, one hundred thirty-nine".