13959035509 has 4 divisors (see below), whose sum is σ = 13962461760. Its totient is φ = 13955609260.

The previous prime is 13959035459. The next prime is 13959035543. The reversal of 13959035509 is 90553095931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13959035509 - 2¹³ = 13959027317 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 (13959035599) 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, 1707007 + ... + 1715164.

It is an arithmetic number, because the mean of its divisors is an integer number (3490615440).

Almost surely, 2^13959035509 is an apocalyptic number.

It is an amenable number.

13959035509 is a deficient number, since it is larger than the sum of its proper divisors (3426251).

13959035509 is an equidigital number, since it uses as much as digits as its factorization.

13959035509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426250.

The product of its (nonzero) digits is 820125, while the sum is 49.

The spelling of 13959035509 in words is "thirteen billion, nine hundred fifty-nine million, thirty-five thousand, five hundred nine".