133259983 has 4 divisors (see below), whose sum is σ = 133996408. Its totient is φ = 132523560.

The previous prime is 133259969. The next prime is 133259989. The reversal of 133259983 is 389952331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389952331 = 1193 ⋅326867.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133259983 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 (133259989) 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, 367941 + ... + 368302.

It is an arithmetic number, because the mean of its divisors is an integer number (33499102).

Almost surely, 2^133259983 is an apocalyptic number.

133259983 is a deficient number, since it is larger than the sum of its proper divisors (736425).

133259983 is an equidigital number, since it uses as much as digits as its factorization.

133259983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736424.

The product of its digits is 174960, while the sum is 43.

The square root of 133259983 is about 11543.8287842466. The cubic root of 133259983 is about 510.7792559910.

The spelling of 133259983 in words is "one hundred thirty-three million, two hundred fifty-nine thousand, nine hundred eighty-three".