135579079 has 4 divisors (see below), whose sum is σ = 142714840. Its totient is φ = 128443320.

The previous prime is 135579061. The next prime is 135579083. The reversal of 135579079 is 970975531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135579079 - 2⁵ = 135579047 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 (135579019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567852 + ... + 3567889.

It is an arithmetic number, because the mean of its divisors is an integer number (35678710).

Almost surely, 2^135579079 is an apocalyptic number.

135579079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

135579079 is a deficient number, since it is larger than the sum of its proper divisors (7135761).

135579079 is an equidigital number, since it uses as much as digits as its factorization.

135579079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135760.

The product of its (nonzero) digits is 297675, while the sum is 46.

The square root of 135579079 is about 11643.8429652757. The cubic root of 135579079 is about 513.7252274824.

The spelling of 135579079 in words is "one hundred thirty-five million, five hundred seventy-nine thousand, seventy-nine".