33989005 has 8 divisors (see below), whose sum is σ = 42933600. Its totient is φ = 25760016.

The previous prime is 33989003. The next prime is 33989027. The reversal of 33989005 is 50098933.

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 33989005 - 2¹ = 33989003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33989003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178795 + ... + 178984.

It is an arithmetic number, because the mean of its divisors is an integer number (5366700).

Almost surely, 2^33989005 is an apocalyptic number.

It is an amenable number.

33989005 is a deficient number, since it is larger than the sum of its proper divisors (8944595).

33989005 is a wasteful number, since it uses less digits than its factorization.

33989005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357803.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 33989005 is about 5830.0090051388. The cubic root of 33989005 is about 323.9262552532.

It can be divided in two parts, 3398 and 9005, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 33989005 in words is "thirty-three million, nine hundred eighty-nine thousand, five".