135399556 has 12 divisors (see below), whose sum is σ = 240287040. Its totient is φ = 66746120.

The previous prime is 135399547. The next prime is 135399571. The reversal of 135399556 is 655993531.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238096 + ... + 238663.

It is an arithmetic number, because the mean of its divisors is an integer number (20023920).

Almost surely, 2^135399556 is an apocalyptic number.

It is an amenable number.

135399556 is a deficient number, since it is larger than the sum of its proper divisors (104887484).

135399556 is a wasteful number, since it uses less digits than its factorization.

135399556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476834 (or 476832 counting only the distinct ones).

The product of its digits is 546750, while the sum is 46.

The square root of 135399556 is about 11636.1314877411. The cubic root of 135399556 is about 513.4983826758.

The spelling of 135399556 in words is "one hundred thirty-five million, three hundred ninety-nine thousand, five hundred fifty-six".