33390401 has 8 divisors (see below), whose sum is σ = 37044000. Its totient is φ = 29839840.

The previous prime is 33390361. The next prime is 33390421. The reversal of 33390401 is 10409333.

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

It is not a de Polignac number, because 33390401 - 2¹⁴ = 33374017 is a prime.

It is a super-2 number, since 2×33390401² = 2229837757881602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33390421) 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, 25076 + ... + 26373.

It is an arithmetic number, because the mean of its divisors is an integer number (4630500).

Almost surely, 2^33390401 is an apocalyptic number.

It is an amenable number.

33390401 is a deficient number, since it is larger than the sum of its proper divisors (3653599).

33390401 is a wasteful number, since it uses less digits than its factorization.

33390401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51519.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 33390401 is about 5778.4427833111. The cubic root of 33390401 is about 322.0133509118.

Adding to 33390401 its reverse (10409333), we get a palindrome (43799734).

The spelling of 33390401 in words is "thirty-three million, three hundred ninety thousand, four hundred one".