33340991 has 8 divisors (see below), whose sum is σ = 35322480. Its totient is φ = 31382208.

The previous prime is 33340973. The next prime is 33340999. The reversal of 33340991 is 19904333.

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 33340991 - 2¹⁸ = 33078847 is a prime.

It is a super-2 number, since 2×33340991² = 2223243361724162, 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 (33340999) 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, 2606 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (4415310).

Almost surely, 2^33340991 is an apocalyptic number.

33340991 is a deficient number, since it is larger than the sum of its proper divisors (1981489).

33340991 is a wasteful number, since it uses less digits than its factorization.

33340991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11353.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 33340991 is about 5774.1658271996. The cubic root of 33340991 is about 321.8544376345.

The spelling of 33340991 in words is "thirty-three million, three hundred forty thousand, nine hundred ninety-one".