133719839 has 8 divisors (see below), whose sum is σ = 146213760. Its totient is φ = 121282200.

The previous prime is 133719829. The next prime is 133719847. The reversal of 133719839 is 938917331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133719839 - 2²⁰ = 132671263 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 133719839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133719829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9017 + ... + 18674.

It is an arithmetic number, because the mean of its divisors is an integer number (18276720).

Almost surely, 2^133719839 is an apocalyptic number.

133719839 is a deficient number, since it is larger than the sum of its proper divisors (12493921).

133719839 is a wasteful number, since it uses less digits than its factorization.

133719839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28141.

The product of its digits is 122472, while the sum is 44.

The square root of 133719839 is about 11563.7294589592. The cubic root of 133719839 is about 511.3661169408.

The spelling of 133719839 in words is "one hundred thirty-three million, seven hundred nineteen thousand, eight hundred thirty-nine".