13203998 has 4 divisors (see below), whose sum is σ = 19806000. Its totient is φ = 6601998.

The previous prime is 13203991. The next prime is 13204007. The reversal of 13203998 is 89930231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89930231 = 421 ⋅213611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203991) by changing a digit.

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 as a sum of consecutive naturals, namely, 3300998 + ... + 3301001.

It is an arithmetic number, because the mean of its divisors is an integer number (4951500).

Almost surely, 2^13203998 is an apocalyptic number.

13203998 is a deficient number, since it is larger than the sum of its proper divisors (6602002).

13203998 is an equidigital number, since it uses as much as digits as its factorization.

13203998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602001.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 13203998 is about 3633.7305899034. The cubic root of 13203998 is about 236.3570077843.

The spelling of 13203998 in words is "thirteen million, two hundred three thousand, nine hundred ninety-eight".