16909797 has 8 divisors (see below), whose sum is σ = 22615840. Its totient is φ = 11238480.

The previous prime is 16909771. The next prime is 16909799. The reversal of 16909797 is 79790961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16909797 - 2²³ = 8521189 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 (16909799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7522 + ... + 9507.

It is an arithmetic number, because the mean of its divisors is an integer number (2826980).

Almost surely, 2^16909797 is an apocalyptic number.

It is an amenable number.

16909797 is a deficient number, since it is larger than the sum of its proper divisors (5706043).

16909797 is a wasteful number, since it uses less digits than its factorization.

16909797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17363.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 16909797 is about 4112.1523561269. The cubic root of 16909797 is about 256.6725732791.

The spelling of 16909797 in words is "sixteen million, nine hundred nine thousand, seven hundred ninety-seven".