16990444 has 6 divisors (see below), whose sum is σ = 29733284. Its totient is φ = 8495220.

The previous prime is 16990439. The next prime is 16990447. The reversal of 16990444 is 44409961.

It is not an unprimeable number, because it can be changed into a prime (16990447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2123802 + ... + 2123809.

Almost surely, 2^16990444 is an apocalyptic number.

It is an amenable number.

16990444 is a deficient number, since it is larger than the sum of its proper divisors (12742840).

16990444 is a wasteful number, since it uses less digits than its factorization.

16990444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247615 (or 4247613 counting only the distinct ones).

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

The square root of 16990444 is about 4121.9466275050. The cubic root of 16990444 is about 257.0799712770.

The spelling of 16990444 in words is "sixteen million, nine hundred ninety thousand, four hundred forty-four".