133539919 has 8 divisors (see below), whose sum is σ = 139399808. Its totient is φ = 127798560.

The previous prime is 133539893. The next prime is 133539929. The reversal of 133539919 is 919935331.

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 133539919 - 2⁹ = 133539407 is a prime.

It is a super-2 number, since 2×133539919² = 35665819933053122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133539929) 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 7 ways as a sum of consecutive naturals, for example, 27327 + ... + 31840.

It is an arithmetic number, because the mean of its divisors is an integer number (17424976).

Almost surely, 2^133539919 is an apocalyptic number.

133539919 is a deficient number, since it is larger than the sum of its proper divisors (5859889).

133539919 is an equidigital number, since it uses as much as digits as its factorization.

133539919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59265.

The product of its digits is 98415, while the sum is 43.

The square root of 133539919 is about 11555.9473432514. The cubic root of 133539919 is about 511.1366663533.

The spelling of 133539919 in words is "one hundred thirty-three million, five hundred thirty-nine thousand, nine hundred nineteen".