133699079 has 4 divisors (see below), whose sum is σ = 133933800. Its totient is φ = 133464360.

The previous prime is 133699051. The next prime is 133699081. The reversal of 133699079 is 970996331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970996331 = 1249 ⋅777419.

It is a cyclic number.

It is not a de Polignac number, because 133699079 - 2⁸ = 133698823 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 (133599079) 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, 116504 + ... + 117645.

It is an arithmetic number, because the mean of its divisors is an integer number (33483450).

Almost surely, 2^133699079 is an apocalyptic number.

133699079 is a deficient number, since it is larger than the sum of its proper divisors (234721).

133699079 is an equidigital number, since it uses as much as digits as its factorization.

133699079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234720.

The product of its (nonzero) digits is 275562, while the sum is 47.

The square root of 133699079 is about 11562.8317898342. The cubic root of 133699079 is about 511.3396523811.

The spelling of 133699079 in words is "one hundred thirty-three million, six hundred ninety-nine thousand, seventy-nine".