16290909 has 16 divisors (see below), whose sum is σ = 24235200. Its totient is φ = 10815408.

The previous prime is 16290907. The next prime is 16290929. The reversal of 16290909 is 90909261.

It is not a de Polignac number, because 16290909 - 2¹ = 16290907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16290907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6142 + ... + 8384.

It is an arithmetic number, because the mean of its divisors is an integer number (1514700).

Almost surely, 2^16290909 is an apocalyptic number.

It is an amenable number.

16290909 is a deficient number, since it is larger than the sum of its proper divisors (7944291).

16290909 is a wasteful number, since it uses less digits than its factorization.

16290909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 16290909 is about 4036.1998216144. The cubic root of 16290909 is about 253.5022232920.

The spelling of 16290909 in words is "sixteen million, two hundred ninety thousand, nine hundred nine".