13539408 has 20 divisors (see below), whose sum is σ = 34976928. Its totient is φ = 4513120.

The previous prime is 13539403. The next prime is 13539437. The reversal of 13539408 is 80493531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13539401) 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, 140988 + ... + 141083.

Almost surely, 2^13539408 is an apocalyptic number.

It is an amenable number.

13539408 is an abundant number, since it is smaller than the sum of its proper divisors (21437520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13539408 is a wasteful number, since it uses less digits than its factorization.

13539408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282082 (or 282076 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 13539408 is about 3679.5934558046. The cubic root of 13539408 is about 238.3416227196.

The spelling of 13539408 in words is "thirteen million, five hundred thirty-nine thousand, four hundred eight".