33438949 has 8 divisors (see below), whose sum is σ = 36160128. Its totient is φ = 30801600.

The previous prime is 33438947. The next prime is 33438953. The reversal of 33438949 is 94983433.

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 33438949 - 2¹ = 33438947 is a prime.

It is a super-2 number, since 2×33438949² = 2236326620449202, 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 (33438947) 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, 20127 + ... + 21724.

It is an arithmetic number, because the mean of its divisors is an integer number (4520016).

Almost surely, 2^33438949 is an apocalyptic number.

It is an amenable number.

33438949 is a deficient number, since it is larger than the sum of its proper divisors (2721179).

33438949 is a wasteful number, since it uses less digits than its factorization.

33438949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41915.

The product of its digits is 279936, while the sum is 43.

The square root of 33438949 is about 5782.6420432187. The cubic root of 33438949 is about 322.1693391920.

The spelling of 33438949 in words is "thirty-three million, four hundred thirty-eight thousand, nine hundred forty-nine".