4394003 has 6 divisors (see below), whose sum is σ = 4449276. Its totient is φ = 4339392.

The previous prime is 4393999. The next prime is 4394021. The reversal of 4394003 is 3004934.

It is not a de Polignac number, because 4394003 - 2² = 4393999 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4394003.

It is not an unprimeable number, because it can be changed into a prime (4394023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9176 + ... + 9642.

It is an arithmetic number, because the mean of its divisors is an integer number (741546).

Almost surely, 2^4394003 is an apocalyptic number.

4394003 is a deficient number, since it is larger than the sum of its proper divisors (55273).

4394003 is an frugal number, since it uses more digits than its factorization.

4394003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 4394003 is about 2096.1877301425. The cubic root of 4394003 is about 163.7897737621.

Adding to 4394003 its reverse (3004934), we get a palindrome (7398937).

The spelling of 4394003 in words is "four million, three hundred ninety-four thousand, three".