133995239 has 8 divisors (see below), whose sum is σ = 161197440. Its totient is φ = 108808056.

The previous prime is 133995233. The next prime is 133995269. The reversal of 133995239 is 932599331.

133995239 = 937² + 938² + ... + 1069².

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

It is not a de Polignac number, because 133995239 - 2²⁰ = 132946663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133995239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133995233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503609 + ... + 503874.

It is an arithmetic number, because the mean of its divisors is an integer number (20149680).

Almost surely, 2^133995239 is an apocalyptic number.

133995239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

133995239 is a deficient number, since it is larger than the sum of its proper divisors (27202201).

133995239 is a wasteful number, since it uses less digits than its factorization.

133995239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007509.

The product of its digits is 196830, while the sum is 44.

The square root of 133995239 is about 11575.6312570849. The cubic root of 133995239 is about 511.7169341389.

The spelling of 133995239 in words is "one hundred thirty-three million, nine hundred ninety-five thousand, two hundred thirty-nine".