2172475439 has 4 divisors (see below), whose sum is σ = 2173131360. Its totient is φ = 2171819520.

The previous prime is 2172475433. The next prime is 2172475451. The reversal of 2172475439 is 9345742712.

2172475439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2172475439 - 2⁸ = 2172475183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2172475439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172475433) 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, 322967 + ... + 329624.

It is an arithmetic number, because the mean of its divisors is an integer number (543282840).

Almost surely, 2^2172475439 is an apocalyptic number.

2172475439 is a deficient number, since it is larger than the sum of its proper divisors (655921).

2172475439 is an equidigital number, since it uses as much as digits as its factorization.

2172475439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655920.

The product of its digits is 423360, while the sum is 44.

The square root of 2172475439 is about 46609.8212719165. The cubic root of 2172475439 is about 1295.1446972378.

The spelling of 2172475439 in words is "two billion, one hundred seventy-two million, four hundred seventy-five thousand, four hundred thirty-nine".