16398843 has 16 divisors (see below), whose sum is σ = 23162880. Its totient is φ = 10291104.

The previous prime is 16398841. The next prime is 16398847. The reversal of 16398843 is 34889361.

It is a happy number.

It is not a de Polignac number, because 16398843 - 2¹ = 16398841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16398795 and 16398804.

It is not an unprimeable number, because it can be changed into a prime (16398841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9030 + ... + 10692.

It is an arithmetic number, because the mean of its divisors is an integer number (1447680).

Almost surely, 2^16398843 is an apocalyptic number.

16398843 is a deficient number, since it is larger than the sum of its proper divisors (6764037).

16398843 is a wasteful number, since it uses less digits than its factorization.

16398843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858.

The product of its digits is 124416, while the sum is 42.

The square root of 16398843 is about 4049.5484933508. The cubic root of 16398843 is about 254.0608437126.

The spelling of 16398843 in words is "sixteen million, three hundred ninety-eight thousand, eight hundred forty-three".