33397399 has 8 divisors (see below), whose sum is σ = 38204288. Its totient is φ = 28599480.

The previous prime is 33397387. The next prime is 33397409. The reversal of 33397399 is 99379333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33397399 - 2¹⁷ = 33266327 is a prime.

It is a super-2 number, since 2×33397399² = 2230772519930402, 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 (33397349) 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, 10864 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (4775536).

Almost surely, 2^33397399 is an apocalyptic number.

33397399 is a deficient number, since it is larger than the sum of its proper divisors (4806889).

33397399 is a wasteful number, since it uses less digits than its factorization.

33397399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485.

The product of its digits is 413343, while the sum is 46.

The square root of 33397399 is about 5779.0482780472. The cubic root of 33397399 is about 322.0358453209.

The spelling of 33397399 in words is "thirty-three million, three hundred ninety-seven thousand, three hundred ninety-nine".