16880909 has 4 divisors (see below), whose sum is σ = 16894080. Its totient is φ = 16867740.

The previous prime is 16880893. The next prime is 16880923. The reversal of 16880909 is 90908861.

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 16880909 - 2⁴ = 16880893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16880959) 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, 4427 + ... + 7304.

It is an arithmetic number, because the mean of its divisors is an integer number (4223520).

Almost surely, 2^16880909 is an apocalyptic number.

It is an amenable number.

16880909 is a deficient number, since it is larger than the sum of its proper divisors (13171).

16880909 is a wasteful number, since it uses less digits than its factorization.

16880909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13170.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 16880909 is about 4108.6383389147. The cubic root of 16880909 is about 256.5263270199.

The spelling of 16880909 in words is "sixteen million, eight hundred eighty thousand, nine hundred nine".