16931444 has 12 divisors (see below), whose sum is σ = 29662500. Its totient is φ = 8456448.

The previous prime is 16931443. The next prime is 16931501. The reversal of 16931444 is 44413961.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 4243600 = 3562^2 + 2060^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16931444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16931443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (2471875).

Almost surely, 2^16931444 is an apocalyptic number.

It is an amenable number.

16931444 is a deficient number, since it is larger than the sum of its proper divisors (12731056).

16931444 is a wasteful number, since it uses less digits than its factorization.

16931444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4640 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 16931444 is about 4114.7835909073. The cubic root of 16931444 is about 256.7820526531.

It can be divided in two parts, 169 and 31444, that added together give a palindrome (31613).

The spelling of 16931444 in words is "sixteen million, nine hundred thirty-one thousand, four hundred forty-four".