3639401 has 8 divisors (see below), whose sum is σ = 3713160. Its totient is φ = 3566592.

The previous prime is 3639397. The next prime is 3639403. The reversal of 3639401 is 1049363.

3639401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1155625 + 2483776 = 1075^2 + 1576^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3639401 - 2² = 3639397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3639403) 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 7 ways as a sum of consecutive naturals, for example, 18761 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (464145).

Almost surely, 2^3639401 is an apocalyptic number.

It is an amenable number.

3639401 is a deficient number, since it is larger than the sum of its proper divisors (73759).

3639401 is a wasteful number, since it uses less digits than its factorization.

3639401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3639401 is about 1907.7214157209. The cubic root of 3639401 is about 153.8189951867.

The spelling of 3639401 in words is "three million, six hundred thirty-nine thousand, four hundred one".