33990965 has 8 divisors (see below), whose sum is σ = 41150808. Its totient is φ = 26951680.

The previous prime is 33990961. The next prime is 33990977. The reversal of 33990965 is 56909933.

It can be written as a sum of positive squares in 4 ways, for example, as 2709316 + 31281649 = 1646^2 + 5593^2 .

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

It is not a de Polignac number, because 33990965 - 2² = 33990961 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 (33990961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29516 + ... + 30645.

It is an arithmetic number, because the mean of its divisors is an integer number (5143851).

Almost surely, 2^33990965 is an apocalyptic number.

It is an amenable number.

33990965 is a deficient number, since it is larger than the sum of its proper divisors (7159843).

33990965 is a wasteful number, since it uses less digits than its factorization.

33990965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60279.

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

The square root of 33990965 is about 5830.1770985108. The cubic root of 33990965 is about 323.9324816124.

The spelling of 33990965 in words is "thirty-three million, nine hundred ninety thousand, nine hundred sixty-five".