1439856113 has 4 divisors (see below), whose sum is σ = 1440865140. Its totient is φ = 1438847088.

The previous prime is 1439856109. The next prime is 1439856127. The reversal of 1439856113 is 3116589341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3116589341 = 557 ⋅5595313.

It can be written as a sum of positive squares in 2 ways, for example, as 140469904 + 1299386209 = 11852^2 + 36047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439856113 - 2² = 1439856109 is a prime.

It is a super-2 number, since 2×1439856113² = 4146371252286937538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439855113) 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, 502370 + ... + 505227.

It is an arithmetic number, because the mean of its divisors is an integer number (360216285).

Almost surely, 2^1439856113 is an apocalyptic number.

It is an amenable number.

1439856113 is a deficient number, since it is larger than the sum of its proper divisors (1009027).

1439856113 is a wasteful number, since it uses less digits than its factorization.

1439856113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009026.

The product of its digits is 77760, while the sum is 41.

The square root of 1439856113 is about 37945.4359969681. The cubic root of 1439856113 is about 1129.2056215013.

The spelling of 1439856113 in words is "one billion, four hundred thirty-nine million, eight hundred fifty-six thousand, one hundred thirteen".