135445879 has 4 divisors (see below), whose sum is σ = 137301376. Its totient is φ = 133590384.

The previous prime is 135445867. The next prime is 135445903. The reversal of 135445879 is 978544531.

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 135445879 - 2⁵ = 135445847 is a prime.

It is a super-2 number, since 2×135445879² = 36691172276165282, 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 (135445819) 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, 927639 + ... + 927784.

It is an arithmetic number, because the mean of its divisors is an integer number (34325344).

Almost surely, 2^135445879 is an apocalyptic number.

135445879 is a deficient number, since it is larger than the sum of its proper divisors (1855497).

135445879 is an equidigital number, since it uses as much as digits as its factorization.

135445879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855496.

The product of its digits is 604800, while the sum is 46.

The square root of 135445879 is about 11638.1217986409. The cubic root of 135445879 is about 513.5569354859.

The spelling of 135445879 in words is "one hundred thirty-five million, four hundred forty-five thousand, eight hundred seventy-nine".