16449438 has 64 divisors (see below), whose sum is σ = 37013760. Its totient is φ = 4849152.

The previous prime is 16449427. The next prime is 16449449. The reversal of 16449438 is 83494461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16449427) and next prime (16449449).

It is a junction number, because it is equal to n+sod(n) for n = 16449396 and 16449405.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 198145 + ... + 198227.

It is an arithmetic number, because the mean of its divisors is an integer number (578340).

Almost surely, 2^16449438 is an apocalyptic number.

16449438 is an abundant number, since it is smaller than the sum of its proper divisors (20564322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16449438 is a wasteful number, since it uses less digits than its factorization.

16449438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 82944, while the sum is 39.

The square root of 16449438 is about 4055.7906750719. The cubic root of 16449438 is about 254.3218582934.

The spelling of 16449438 in words is "sixteen million, four hundred forty-nine thousand, four hundred thirty-eight".