135990679 has 8 divisors (see below), whose sum is σ = 150232320. Its totient is φ = 122062200.

The previous prime is 135990671. The next prime is 135990691. The reversal of 135990679 is 976099531.

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

It is a cyclic number.

It is not a de Polignac number, because 135990679 - 2³ = 135990671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135990671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77377 + ... + 79114.

It is an arithmetic number, because the mean of its divisors is an integer number (18779040).

Almost surely, 2^135990679 is an apocalyptic number.

135990679 is a deficient number, since it is larger than the sum of its proper divisors (14241641).

135990679 is a wasteful number, since it uses less digits than its factorization.

135990679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156581.

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 135990679 is about 11661.5041482649. The cubic root of 135990679 is about 514.2445693751.

The spelling of 135990679 in words is "one hundred thirty-five million, nine hundred ninety thousand, six hundred seventy-nine".