16449143 has 4 divisors (see below), whose sum is σ = 16657440. Its totient is φ = 16240848.

The previous prime is 16449131. The next prime is 16449161. The reversal of 16449143 is 34194461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34194461 = 7 ⋅4884923.

It is a cyclic number.

It is not a de Polignac number, because 16449143 - 2¹⁰ = 16448119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16449113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104030 + ... + 104187.

It is an arithmetic number, because the mean of its divisors is an integer number (4164360).

Almost surely, 2^16449143 is an apocalyptic number.

16449143 is a deficient number, since it is larger than the sum of its proper divisors (208297).

16449143 is an equidigital number, since it uses as much as digits as its factorization.

16449143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208296.

The product of its digits is 10368, while the sum is 32.

The square root of 16449143 is about 4055.7543071542. The cubic root of 16449143 is about 254.3203379700.

The spelling of 16449143 in words is "sixteen million, four hundred forty-nine thousand, one hundred forty-three".