134401509 has 24 divisors (see below), whose sum is σ = 214778304. Its totient is φ = 80304000.

The previous prime is 134401493. The next prime is 134401513. The reversal of 134401509 is 905104431.

It is not a de Polignac number, because 134401509 - 2⁴ = 134401493 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134401009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2532 + ... + 16589.

It is an arithmetic number, because the mean of its divisors is an integer number (8949096).

Almost surely, 2^134401509 is an apocalyptic number.

It is an amenable number.

134401509 is a deficient number, since it is larger than the sum of its proper divisors (80376795).

134401509 is a wasteful number, since it uses less digits than its factorization.

134401509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19209 (or 19206 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 134401509 is about 11593.1664785769. The cubic root of 134401509 is about 512.2335830453.

The spelling of 134401509 in words is "one hundred thirty-four million, four hundred one thousand, five hundred nine".