4390002 has 12 divisors (see below), whose sum is σ = 9511710. Its totient is φ = 1463328.

The previous prime is 4389997. The next prime is 4390021. The reversal of 4390002 is 2000934.

It can be written as a sum of positive squares in only one way, i.e., 3767481 + 622521 = 1941^2 + 789^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 243889 = 4390002 / (4 + 3 + 9 + 0 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121927 + ... + 121962.

Almost surely, 2^4390002 is an apocalyptic number.

4390002 is an abundant number, since it is smaller than the sum of its proper divisors (5121708).

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

4390002 is a wasteful number, since it uses less digits than its factorization.

4390002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243897 (or 243894 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 4390002 is about 2095.2331612496. The cubic root of 4390002 is about 163.7400452352.

Adding to 4390002 its reverse (2000934), we get a palindrome (6390936).

The spelling of 4390002 in words is "four million, three hundred ninety thousand, two".