33041389 has 4 divisors (see below), whose sum is σ = 33173280. Its totient is φ = 32909500.

The previous prime is 33041383. The next prime is 33041417. The reversal of 33041389 is 98314033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33041389 - 2²¹ = 30944237 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33041389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33041383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65569 + ... + 66070.

It is an arithmetic number, because the mean of its divisors is an integer number (8293320).

Almost surely, 2^33041389 is an apocalyptic number.

It is an amenable number.

33041389 is a deficient number, since it is larger than the sum of its proper divisors (131891).

33041389 is a wasteful number, since it uses less digits than its factorization.

33041389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131890.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 33041389 is about 5748.1639677379. The cubic root of 33041389 is about 320.8874745909.

The spelling of 33041389 in words is "thirty-three million, forty-one thousand, three hundred eighty-nine".