135923279 has 8 divisors (see below), whose sum is σ = 144458640. Its totient is φ = 127447936.

The previous prime is 135923273. The next prime is 135923297. The reversal of 135923279 is 972329531.

It is a happy number.

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 135923279 - 2¹² = 135919183 is a prime.

It is a super-2 number, since 2×135923279² = 36950275548223682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135923273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10289 + ... + 19434.

It is an arithmetic number, because the mean of its divisors is an integer number (18057330).

Almost surely, 2^135923279 is an apocalyptic number.

135923279 is a deficient number, since it is larger than the sum of its proper divisors (8535361).

135923279 is a wasteful number, since it uses less digits than its factorization.

135923279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30009.

The product of its digits is 102060, while the sum is 41.

The square root of 135923279 is about 11658.6139399158. The cubic root of 135923279 is about 514.1595983269.

The spelling of 135923279 in words is "one hundred thirty-five million, nine hundred twenty-three thousand, two hundred seventy-nine".