33420909 has 8 divisors (see below), whose sum is σ = 46498752. Its totient is φ = 21311840.

The previous prime is 33420889. The next prime is 33420913. The reversal of 33420909 is 90902433.

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 33420909 - 2¹² = 33416813 is a prime.

It is a super-2 number, since 2×33420909² = 2233914316772562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420949) 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, 242112 + ... + 242249.

It is an arithmetic number, because the mean of its divisors is an integer number (5812344).

Almost surely, 2^33420909 is an apocalyptic number.

It is an amenable number.

33420909 is a deficient number, since it is larger than the sum of its proper divisors (13077843).

33420909 is a wasteful number, since it uses less digits than its factorization.

33420909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484387.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 33420909 is about 5781.0819921534. The cubic root of 33420909 is about 322.1113929893. Note that the first 3 decimals are identical.

The spelling of 33420909 in words is "thirty-three million, four hundred twenty thousand, nine hundred nine".