16939105 has 4 divisors (see below), whose sum is σ = 20326932. Its totient is φ = 13551280.

The previous prime is 16939093. The next prime is 16939147. The reversal of 16939105 is 50193961.

16939105 = 1297² + 1298² + ... + 1306².

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 9778129 + 7160976 = 3127^2 + 2676^2 .

It is not a de Polignac number, because 16939105 - 2⁵ = 16939073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693906 + ... + 1693915.

It is an arithmetic number, because the mean of its divisors is an integer number (5081733).

Almost surely, 2^16939105 is an apocalyptic number.

It is an amenable number.

16939105 is a deficient number, since it is larger than the sum of its proper divisors (3387827).

16939105 is an equidigital number, since it uses as much as digits as its factorization.

16939105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387826.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 16939105 is about 4115.7143972827. The cubic root of 16939105 is about 256.8207756877.

The spelling of 16939105 in words is "sixteen million, nine hundred thirty-nine thousand, one hundred five".