33440401 has 2 divisors, whose sum is σ = 33440402. Its totient is φ = 33440400.

The previous prime is 33440357. The next prime is 33440419. The reversal of 33440401 is 10404433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22043025 + 11397376 = 4695^2 + 3376^2 .

It is a cyclic number.

It is not a de Polignac number, because 33440401 - 2⁷ = 33440273 is a prime.

It is a super-2 number, since 2×33440401² = 2236520838081602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33440431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16720200 + 16720201.

It is an arithmetic number, because the mean of its divisors is an integer number (16720201).

Almost surely, 2^33440401 is an apocalyptic number.

It is an amenable number.

33440401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33440401 is an equidigital number, since it uses as much as digits as its factorization.

33440401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 33440401 is about 5782.7675900039. The cubic root of 33440401 is about 322.1740022484.

Adding to 33440401 its reverse (10404433), we get a palindrome (43844834).

The spelling of 33440401 in words is "thirty-three million, four hundred forty thousand, four hundred one".