16449963 has 4 divisors (see below), whose sum is σ = 21933288. Its totient is φ = 10966640.

The previous prime is 16449949. The next prime is 16449997. The reversal of 16449963 is 36994461.

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

It is a cyclic number.

It is not a de Polignac number, because 16449963 - 2¹⁶ = 16384427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16449463) 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 in 3 ways as a sum of consecutive naturals, for example, 2741658 + ... + 2741663.

It is an arithmetic number, because the mean of its divisors is an integer number (5483322).

Almost surely, 2^16449963 is an apocalyptic number.

16449963 is a deficient number, since it is larger than the sum of its proper divisors (5483325).

16449963 is an equidigital number, since it uses as much as digits as its factorization.

16449963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483324.

The product of its digits is 139968, while the sum is 42.

The square root of 16449963 is about 4055.8553968306. The cubic root of 16449963 is about 254.3245639088.

The spelling of 16449963 in words is "sixteen million, four hundred forty-nine thousand, nine hundred sixty-three".