3644394 has 16 divisors (see below), whose sum is σ = 7849632. Its totient is φ = 1121328.

The previous prime is 3644357. The next prime is 3644411. The reversal of 3644394 is 4934463.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23284 + ... + 23439.

It is an arithmetic number, because the mean of its divisors is an integer number (490602).

Almost surely, 2^3644394 is an apocalyptic number.

3644394 is an abundant number, since it is smaller than the sum of its proper divisors (4205238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644394 is a wasteful number, since it uses less digits than its factorization.

3644394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46741.

The product of its digits is 31104, while the sum is 33.

The square root of 3644394 is about 1909.0295964180. The cubic root of 3644394 is about 153.8893059593.

The spelling of 3644394 in words is "three million, six hundred forty-four thousand, three hundred ninety-four".