33440001 has 24 divisors (see below), whose sum is σ = 52367040. Its totient is φ = 18924192.

The previous prime is 33439993. The next prime is 33440009. The reversal of 33440001 is 10004433.

It is an interprime number because it is at equal distance from previous prime (33439993) and next prime (33440009).

It is not a de Polignac number, because 33440001 - 2³ = 33439993 is a prime.

It is a super-2 number, since 2×33440001² = 2236467333760002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33440009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14980 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (2181960).

Almost surely, 2^33440001 is an apocalyptic number.

It is an amenable number.

33440001 is a deficient number, since it is larger than the sum of its proper divisors (18927039).

33440001 is a wasteful number, since it uses less digits than its factorization.

33440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 33440001 is about 5782.7330043847. The cubic root of 33440001 is about 322.1727176733.

Adding to 33440001 its reverse (10004433), we get a palindrome (43444434).

The spelling of 33440001 in words is "thirty-three million, four hundred forty thousand, one".