133790579 has 4 divisors (see below), whose sum is σ = 144082176. Its totient is φ = 123498984.

The previous prime is 133790521. The next prime is 133790581. The reversal of 133790579 is 975097331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975097331 = 13 ⋅75007487.

It is a cyclic number.

It is not a de Polignac number, because 133790579 - 2²⁰ = 132742003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133790519) 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, 5145779 + ... + 5145804.

It is an arithmetic number, because the mean of its divisors is an integer number (36020544).

Almost surely, 2^133790579 is an apocalyptic number.

133790579 is a deficient number, since it is larger than the sum of its proper divisors (10291597).

133790579 is a wasteful number, since it uses less digits than its factorization.

133790579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291596.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 133790579 is about 11566.7877563306. The cubic root of 133790579 is about 511.4562747473.

The spelling of 133790579 in words is "one hundred thirty-three million, seven hundred ninety thousand, five hundred seventy-nine".