16494399 has 6 divisors (see below), whose sum is σ = 23825256. Its totient is φ = 10996260.

The previous prime is 16494397. The next prime is 16494407. The reversal of 16494399 is 99349461.

It is not a de Polignac number, because 16494399 - 2¹ = 16494397 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16494391) 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 5 ways as a sum of consecutive naturals, for example, 916347 + ... + 916364.

It is an arithmetic number, because the mean of its divisors is an integer number (3970876).

Almost surely, 2^16494399 is an apocalyptic number.

16494399 is a deficient number, since it is larger than the sum of its proper divisors (7330857).

16494399 is a wasteful number, since it uses less digits than its factorization.

16494399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832717 (or 1832714 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 16494399 is about 4061.3297083591. The cubic root of 16494399 is about 254.5533588648.

The spelling of 16494399 in words is "sixteen million, four hundred ninety-four thousand, three hundred ninety-nine".