16449673 has 4 divisors (see below), whose sum is σ = 16494148. Its totient is φ = 16405200.

The previous prime is 16449661. The next prime is 16449683. The reversal of 16449673 is 37694461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14235529 + 2214144 = 3773^2 + 1488^2 .

It is a cyclic number.

It is not a de Polignac number, because 16449673 - 2⁹ = 16449161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16449683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21678 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (4123537).

Almost surely, 2^16449673 is an apocalyptic number.

It is an amenable number.

16449673 is a deficient number, since it is larger than the sum of its proper divisors (44475).

16449673 is an equidigital number, since it uses as much as digits as its factorization.

16449673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44474.

The product of its digits is 108864, while the sum is 40.

The square root of 16449673 is about 4055.8196458916. The cubic root of 16449673 is about 254.3230693855.

The spelling of 16449673 in words is "sixteen million, four hundred forty-nine thousand, six hundred seventy-three".