16909771 has 2 divisors, whose sum is σ = 16909772. Its totient is φ = 16909770.

The previous prime is 16909757. The next prime is 16909799. The reversal of 16909771 is 17790961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16909771 - 2⁷ = 16909643 is a prime.

It is not a weakly prime, because it can be changed into another prime (16909721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8454885 + 8454886.

It is an arithmetic number, because the mean of its divisors is an integer number (8454886).

Almost surely, 2^16909771 is an apocalyptic number.

16909771 is a deficient number, since it is larger than the sum of its proper divisors (1).

16909771 is an equidigital number, since it uses as much as digits as its factorization.

16909771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 16909771 is about 4112.1491947642. The cubic root of 16909771 is about 256.6724417283.

The spelling of 16909771 in words is "sixteen million, nine hundred nine thousand, seven hundred seventy-one".