16444090 has 16 divisors (see below), whose sum is σ = 31876488. Its totient is φ = 6071616.

The previous prime is 16444079. The next prime is 16444091. The reversal of 16444090 is 9044461.

It can be written as a sum of positive squares in 4 ways, for example, as 12837889 + 3606201 = 3583^2 + 1899^2 .

It is a super-3 number, since 3×16444090³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16444091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63117 + ... + 63376.

Almost surely, 2^16444090 is an apocalyptic number.

16444090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16444090 is a deficient number, since it is larger than the sum of its proper divisors (15432398).

16444090 is a wasteful number, since it uses less digits than its factorization.

16444090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126513.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16444090 is about 4055.1313172325. The cubic root of 16444090 is about 254.2942938112.

The spelling of 16444090 in words is "sixteen million, four hundred forty-four thousand, ninety".