135912993 has 8 divisors (see below), whose sum is σ = 181336128. Its totient is φ = 90549264.

The previous prime is 135912979. The next prime is 135913009. The reversal of 135912993 is 399219531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135912993 - 2⁵ = 135912961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135912593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9205 + ... + 18882.

It is an arithmetic number, because the mean of its divisors is an integer number (22667016).

Almost surely, 2^135912993 is an apocalyptic number.

It is an amenable number.

135912993 is a deficient number, since it is larger than the sum of its proper divisors (45423135).

135912993 is a wasteful number, since it uses less digits than its factorization.

135912993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29703.

The product of its digits is 65610, while the sum is 42.

The square root of 135912993 is about 11658.1727985135. The cubic root of 135912993 is about 514.1466283164.

The spelling of 135912993 in words is "one hundred thirty-five million, nine hundred twelve thousand, nine hundred ninety-three".