133339979 has 4 divisors (see below), whose sum is σ = 133637400. Its totient is φ = 133042560.

The previous prime is 133339963. The next prime is 133340003. The reversal of 133339979 is 979933331.

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 133339979 - 2⁴ = 133339963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133339909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148037 + ... + 148934.

It is an arithmetic number, because the mean of its divisors is an integer number (33409350).

Almost surely, 2^133339979 is an apocalyptic number.

133339979 is a deficient number, since it is larger than the sum of its proper divisors (297421).

133339979 is an equidigital number, since it uses as much as digits as its factorization.

133339979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297420.

The product of its digits is 413343, while the sum is 47.

The square root of 133339979 is about 11547.2931460148. The cubic root of 133339979 is about 510.8814425164.

The spelling of 133339979 in words is "one hundred thirty-three million, three hundred thirty-nine thousand, nine hundred seventy-nine".