16879949 has 4 divisors (see below), whose sum is σ = 17043936. Its totient is φ = 16715964.

The previous prime is 16879939. The next prime is 16879969. The reversal of 16879949 is 94997861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16879949 - 2¹² = 16875853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16879949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16879939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81839 + ... + 82044.

It is an arithmetic number, because the mean of its divisors is an integer number (4260984).

Almost surely, 2^16879949 is an apocalyptic number.

It is an amenable number.

16879949 is a deficient number, since it is larger than the sum of its proper divisors (163987).

16879949 is a wasteful number, since it uses less digits than its factorization.

16879949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163986.

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

The square root of 16879949 is about 4108.5215102272. The cubic root of 16879949 is about 256.5214641313.

The spelling of 16879949 in words is "sixteen million, eight hundred seventy-nine thousand, nine hundred forty-nine".