135399208 has 16 divisors (see below), whose sum is σ = 290141280. Its totient is φ = 58028208.

The previous prime is 135399167. The next prime is 135399221. The reversal of 135399208 is 802993531.

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, 1208866 + ... + 1208977.

It is an arithmetic number, because the mean of its divisors is an integer number (18133830).

Almost surely, 2^135399208 is an apocalyptic number.

It is an amenable number.

135399208 is an abundant number, since it is smaller than the sum of its proper divisors (154742072).

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

135399208 is a wasteful number, since it uses less digits than its factorization.

135399208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417856 (or 2417852 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 135399208 is about 11636.1165343082. The cubic root of 135399208 is about 513.4979427492.

The spelling of 135399208 in words is "one hundred thirty-five million, three hundred ninety-nine thousand, two hundred eight".