16440843 has 6 divisors (see below), whose sum is σ = 21930492. Its totient is φ = 10955880.

The previous prime is 16440829. The next prime is 16440847. The reversal of 16440843 is 34804461.

It is not a de Polignac number, because 16440843 - 2⁵ = 16440811 is a prime.

It is a super-3 number, since 3×16440843³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16440843.

It is not an unprimeable number, because it can be changed into a prime (16440847) 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, 5853 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (3655082).

Almost surely, 2^16440843 is an apocalyptic number.

16440843 is a deficient number, since it is larger than the sum of its proper divisors (5489649).

16440843 is an frugal number, since it uses more digits than its factorization.

16440843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 16440843 is about 4054.7309405187. The cubic root of 16440843 is about 254.2775553168.

It can be divided in two parts, 164408 and 43, that added together give a triangular number (164451 = T₅₇₃).

The spelling of 16440843 in words is "sixteen million, four hundred forty thousand, eight hundred forty-three".