4399964 has 12 divisors (see below), whose sum is σ = 7776888. Its totient is φ = 2178000.

The previous prime is 4399961. The next prime is 4399973. The reversal of 4399964 is 4699934.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5042 + ... + 5849.

It is an arithmetic number, because the mean of its divisors is an integer number (648074).

Almost surely, 2^4399964 is an apocalyptic number.

It is an amenable number.

4399964 is a deficient number, since it is larger than the sum of its proper divisors (3376924).

4399964 is a wasteful number, since it uses less digits than its factorization.

4399964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10996 (or 10994 counting only the distinct ones).

The product of its digits is 209952, while the sum is 44.

The square root of 4399964 is about 2097.6091151594. The cubic root of 4399964 is about 163.8638072164.

The spelling of 4399964 in words is "four million, three hundred ninety-nine thousand, nine hundred sixty-four".