4389636 has 24 divisors (see below), whose sum is σ = 10384864. Its totient is φ = 1442880.

The previous prime is 4389611. The next prime is 4389647. The reversal of 4389636 is 6369834.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4389594 and 4389603.

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, 1630 + ... + 3381.

Almost surely, 2^4389636 is an apocalyptic number.

It is an amenable number.

4389636 is an abundant number, since it is smaller than the sum of its proper divisors (5995228).

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

4389636 is a wasteful number, since it uses less digits than its factorization.

4389636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091 (or 5089 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 4389636 is about 2095.1458183143. The cubic root of 4389636 is about 163.7354947041.

The spelling of 4389636 in words is "four million, three hundred eighty-nine thousand, six hundred thirty-six".