14139805397 has 4 divisors (see below), whose sum is σ = 14140265100. Its totient is φ = 14139345696.

The previous prime is 14139805391. The next prime is 14139805439. The reversal of 14139805397 is 79350893141.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14110113796 + 29691601 = 118786^2 + 5449^2 .

It is a cyclic number.

It is not a de Polignac number, because 14139805397 - 2³⁰ = 13066063573 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 (14139805391) 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, 180128 + ... + 246425.

It is an arithmetic number, because the mean of its divisors is an integer number (3535066275).

Almost surely, 2^14139805397 is an apocalyptic number.

It is an amenable number.

14139805397 is a deficient number, since it is larger than the sum of its proper divisors (459703).

14139805397 is an equidigital number, since it uses as much as digits as its factorization.

14139805397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459702.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 14139805397 in words is "fourteen billion, one hundred thirty-nine million, eight hundred five thousand, three hundred ninety-seven".