16979854 has 4 divisors (see below), whose sum is σ = 25469784. Its totient is φ = 8489926.

The previous prime is 16979849. The next prime is 16979861. The reversal of 16979854 is 45897961.

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

It is a super-2 number, since 2×16979854² = 576630883722632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 16979798 and 16979807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4244962 + ... + 4244965.

It is an arithmetic number, because the mean of its divisors is an integer number (6367446).

Almost surely, 2^16979854 is an apocalyptic number.

16979854 is a deficient number, since it is larger than the sum of its proper divisors (8489930).

16979854 is an equidigital number, since it uses as much as digits as its factorization.

16979854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489929.

The product of its digits is 544320, while the sum is 49.

The square root of 16979854 is about 4120.6618400446. The cubic root of 16979854 is about 257.0265482524.

The spelling of 16979854 in words is "sixteen million, nine hundred seventy-nine thousand, eight hundred fifty-four".