16409944 has 16 divisors (see below), whose sum is σ = 31600800. Its totient is φ = 7983072.

The previous prime is 16409941. The next prime is 16409951. The reversal of 16409944 is 44990461.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16409941) 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, 27424 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (1975050).

Almost surely, 2^16409944 is an apocalyptic number.

It is an amenable number.

16409944 is a deficient number, since it is larger than the sum of its proper divisors (15190856).

16409944 is a wasteful number, since it uses less digits than its factorization.

16409944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55482 (or 55478 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 16409944 is about 4050.9189080997. The cubic root of 16409944 is about 254.1181585949.

The spelling of 16409944 in words is "sixteen million, four hundred nine thousand, nine hundred forty-four".