16975939 has 4 divisors (see below), whose sum is σ = 17084224. Its totient is φ = 16867656.

The previous prime is 16975921. The next prime is 16975957. The reversal of 16975939 is 93957961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93957961 = 1427 ⋅65843.

It is an interprime number because it is at equal distance from previous prime (16975921) and next prime (16975957).

It is a cyclic number.

It is not a de Polignac number, because 16975939 - 2¹³ = 16967747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16975892 and 16975901.

It is not an unprimeable number, because it can be changed into a prime (16975039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53907 + ... + 54220.

It is an arithmetic number, because the mean of its divisors is an integer number (4271056).

Almost surely, 2^16975939 is an apocalyptic number.

16975939 is a deficient number, since it is larger than the sum of its proper divisors (108285).

16975939 is a wasteful number, since it uses less digits than its factorization.

16975939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108284.

The product of its digits is 459270, while the sum is 49.

The square root of 16975939 is about 4120.1867676114. The cubic root of 16975939 is about 257.0067927570.

The spelling of 16975939 in words is "sixteen million, nine hundred seventy-five thousand, nine hundred thirty-nine".