13003990 has 16 divisors (see below), whose sum is σ = 23509440. Its totient is φ = 5178880.

The previous prime is 13003987. The next prime is 13004051. The reversal of 13003990 is 9930031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331 + ... + 5110.

It is an arithmetic number, because the mean of its divisors is an integer number (1469340).

Almost surely, 2^13003990 is an apocalyptic number.

13003990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13003990 is a deficient number, since it is larger than the sum of its proper divisors (10505450).

13003990 is a wasteful number, since it uses less digits than its factorization.

13003990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 13003990 is about 3606.1045464601. The cubic root of 13003990 is about 235.1575222740.

The spelling of 13003990 in words is "thirteen million, three thousand, nine hundred ninety".