16949879 has 2 divisors, whose sum is σ = 16949880. Its totient is φ = 16949878.

The previous prime is 16949857. The next prime is 16949899. The reversal of 16949879 is 97894961.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16949879 - 2²⁴ = 172663 is a prime.

It is a super-2 number, since 2×16949879² = 574596796229282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16949879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16949809) by changing a digit.

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, 8474939 + 8474940.

It is an arithmetic number, because the mean of its divisors is an integer number (8474940).

Almost surely, 2^16949879 is an apocalyptic number.

16949879 is a deficient number, since it is larger than the sum of its proper divisors (1).

16949879 is an equidigital number, since it uses as much as digits as its factorization.

16949879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 53.

The square root of 16949879 is about 4117.0230749900. The cubic root of 16949879 is about 256.8752138375.

The spelling of 16949879 in words is "sixteen million, nine hundred forty-nine thousand, eight hundred seventy-nine".