135648979 has 8 divisors (see below), whose sum is σ = 142305120. Its totient is φ = 129124800.

The previous prime is 135648977. The next prime is 135648983. The reversal of 135648979 is 979846531.

It is a happy number.

135648979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 135648979 - 2¹ = 135648977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135648973) 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, 30882 + ... + 34999.

It is an arithmetic number, because the mean of its divisors is an integer number (17788140).

Almost surely, 2^135648979 is an apocalyptic number.

135648979 is a deficient number, since it is larger than the sum of its proper divisors (6656141).

135648979 is an equidigital number, since it uses as much as digits as its factorization.

135648979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65981.

The product of its digits is 1632960, while the sum is 52.

The square root of 135648979 is about 11646.8441648371. The cubic root of 135648979 is about 513.8134987806.

The spelling of 135648979 in words is "one hundred thirty-five million, six hundred forty-eight thousand, nine hundred seventy-nine".