33408413 has 4 divisors (see below), whose sum is σ = 33811008. Its totient is φ = 33005820.

The previous prime is 33408367. The next prime is 33408439. The reversal of 33408413 is 31480433.

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 33408413 - 2⁸ = 33408157 is a prime.

It is a super-2 number, since 2×33408413² = 2232244118357138, 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 (33408913) 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 3 ways as a sum of consecutive naturals, for example, 201173 + ... + 201338.

It is an arithmetic number, because the mean of its divisors is an integer number (8452752).

Almost surely, 2^33408413 is an apocalyptic number.

It is an amenable number.

33408413 is a deficient number, since it is larger than the sum of its proper divisors (402595).

33408413 is an equidigital number, since it uses as much as digits as its factorization.

33408413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402594.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 33408413 is about 5780.0011245674. The cubic root of 33408413 is about 322.0712424184.

Adding to 33408413 its reverse (31480433), we get a palindrome (64888846).

The spelling of 33408413 in words is "thirty-three million, four hundred eight thousand, four hundred thirteen".