2147439311 has 4 divisors (see below), whose sum is σ = 2179490712. Its totient is φ = 2115387912.

The previous prime is 2147439293. The next prime is 2147439323. The reversal of 2147439311 is 1139347412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2147439311 is a prime.

It is a super-2 number, since 2×2147439311² = 9222991188856309442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147439331) 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, 16025600 + ... + 16025733.

It is an arithmetic number, because the mean of its divisors is an integer number (544872678).

Almost surely, 2^2147439311 is an apocalyptic number.

2147439311 is a deficient number, since it is larger than the sum of its proper divisors (32051401).

2147439311 is an equidigital number, since it uses as much as digits as its factorization.

2147439311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32051400.

The product of its digits is 18144, while the sum is 35.

The square root of 2147439311 is about 46340.4716311779. The cubic root of 2147439311 is about 1290.1502761454.

The spelling of 2147439311 in words is "two billion, one hundred forty-seven million, four hundred thirty-nine thousand, three hundred eleven".