16674139 has 2 divisors, whose sum is σ = 16674140. Its totient is φ = 16674138.

The previous prime is 16674113. The next prime is 16674157. The reversal of 16674139 is 93147661.

It is a strong prime.

It is an emirp because it is prime and its reverse (93147661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16674139 - 2⁵ = 16674107 is a prime.

It is a super-2 number, since 2×16674139² = 556053822782642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16674098 and 16674107.

It is not a weakly prime, because it can be changed into another prime (16674199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8337069 + 8337070.

It is an arithmetic number, because the mean of its divisors is an integer number (8337070).

Almost surely, 2^16674139 is an apocalyptic number.

16674139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16674139 is an equidigital number, since it uses as much as digits as its factorization.

16674139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 16674139 is about 4083.3979722775. The cubic root of 16674139 is about 255.4746458910.

It can be divided in two parts, 166 and 74139, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 16674139 in words is "sixteen million, six hundred seventy-four thousand, one hundred thirty-nine".