16944745 has 4 divisors (see below), whose sum is σ = 20333700. Its totient is φ = 13555792.

The previous prime is 16944743. The next prime is 16944749. The reversal of 16944745 is 54744961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2474329 + 14470416 = 1573^2 + 3804^2 .

It is a cyclic number.

It is not a de Polignac number, because 16944745 - 2¹ = 16944743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16944698 and 16944707.

It is not an unprimeable number, because it can be changed into a prime (16944743) 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, 1694470 + ... + 1694479.

It is an arithmetic number, because the mean of its divisors is an integer number (5083425).

Almost surely, 2^16944745 is an apocalyptic number.

It is an amenable number.

16944745 is a deficient number, since it is larger than the sum of its proper divisors (3388955).

16944745 is an equidigital number, since it uses as much as digits as its factorization.

16944745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388954.

The product of its digits is 120960, while the sum is 40.

The square root of 16944745 is about 4116.3995189972. The cubic root of 16944745 is about 256.8492759822.

It can be divided in two parts, 16944 and 745, that added together give a square (17689 = 133²).

The spelling of 16944745 in words is "sixteen million, nine hundred forty-four thousand, seven hundred forty-five".