13445409439 has 24 divisors (see below), whose sum is σ = 17082292608. Its totient is φ = 10464758640.

The previous prime is 13445409409. The next prime is 13445409469. The reversal of 13445409439 is 93490454431.

13445409439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13445409409) and next prime (13445409469).

It is not a de Polignac number, because 13445409439 - 2²⁹ = 12908538527 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 (13445409409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464032 + ... + 492154.

It is an arithmetic number, because the mean of its divisors is an integer number (711762192).

Almost surely, 2^13445409439 is an apocalyptic number.

13445409439 is a deficient number, since it is larger than the sum of its proper divisors (3636883169).

13445409439 is a wasteful number, since it uses less digits than its factorization.

13445409439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29035 (or 29028 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 13445409439 in words is "thirteen billion, four hundred forty-five million, four hundred nine thousand, four hundred thirty-nine".