16939982 has 8 divisors (see below), whose sum is σ = 26747400. Its totient is φ = 8024184.

The previous prime is 16939933. The next prime is 16939997. The reversal of 16939982 is 28993961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222857 + ... + 222932.

It is an arithmetic number, because the mean of its divisors is an integer number (3343425).

Almost surely, 2^16939982 is an apocalyptic number.

16939982 is a deficient number, since it is larger than the sum of its proper divisors (9807418).

16939982 is a wasteful number, since it uses less digits than its factorization.

16939982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445810.

The product of its digits is 209952, while the sum is 47.

The square root of 16939982 is about 4115.8209387679. The cubic root of 16939982 is about 256.8252077978.

The spelling of 16939982 in words is "sixteen million, nine hundred thirty-nine thousand, nine hundred eighty-two".