6399003 has 16 divisors (see below), whose sum is σ = 9386496. Its totient is φ = 3852960.

The previous prime is 6398999. The next prime is 6399007. The reversal of 6399003 is 3009936.

It is an interprime number because it is at equal distance from previous prime (6398999) and next prime (6399007).

It is not a de Polignac number, because 6399003 - 2² = 6398999 is a prime.

6399003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6399007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (586656).

Almost surely, 2^6399003 is an apocalyptic number.

6399003 is a deficient number, since it is larger than the sum of its proper divisors (2987493).

6399003 is a wasteful number, since it uses less digits than its factorization.

6399003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 6399003 is about 2529.6250710333. The cubic root of 6399003 is about 185.6539118770.

The spelling of 6399003 in words is "six million, three hundred ninety-nine thousand, three".