33340393 has 4 divisors (see below), whose sum is σ = 33810048. Its totient is φ = 32870740.

The previous prime is 33340357. The next prime is 33340399. The reversal of 33340393 is 39304333.

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 a de Polignac number, because none of the positive numbers 2^k-33340393 is a prime.

It is a super-2 number, since 2×33340393² = 2223163610788898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33340399) 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, 234721 + ... + 234862.

It is an arithmetic number, because the mean of its divisors is an integer number (8452512).

Almost surely, 2^33340393 is an apocalyptic number.

It is an amenable number.

33340393 is a deficient number, since it is larger than the sum of its proper divisors (469655).

33340393 is an equidigital number, since it uses as much as digits as its factorization.

33340393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469654.

The product of its (nonzero) digits is 8748, while the sum is 28.

The square root of 33340393 is about 5774.1140445959. The cubic root of 33340393 is about 321.8525133755.

It can be divided in two parts, 33340 and 393, that added together give a palindrome (33733).

The spelling of 33340393 in words is "thirty-three million, three hundred forty thousand, three hundred ninety-three".