33139985 has 8 divisors (see below), whose sum is σ = 39807720. Its totient is φ = 26485504.

The previous prime is 33139973. The next prime is 33140017. The reversal of 33139985 is 58993133.

It can be written as a sum of positive squares in 4 ways, for example, as 21641104 + 11498881 = 4652^2 + 3391^2 .

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 33139985 - 2⁴ = 33139969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3449 + ... + 8841.

It is an arithmetic number, because the mean of its divisors is an integer number (4975965).

Almost surely, 2^33139985 is an apocalyptic number.

It is an amenable number.

33139985 is a deficient number, since it is larger than the sum of its proper divisors (6667735).

33139985 is a wasteful number, since it uses less digits than its factorization.

33139985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its digits is 87480, while the sum is 41.

The square root of 33139985 is about 5756.7338830278. The cubic root of 33139985 is about 321.2063353170.

The spelling of 33139985 in words is "thirty-three million, one hundred thirty-nine thousand, nine hundred eighty-five".