16488909 has 24 divisors (see below), whose sum is σ = 24628032. Its totient is φ = 10624320.

The previous prime is 16488889. The next prime is 16488911. The reversal of 16488909 is 90988461.

It is not a de Polignac number, because 16488909 - 2⁵ = 16488877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16488949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52864 + ... + 53174.

It is an arithmetic number, because the mean of its divisors is an integer number (1026168).

Almost surely, 2^16488909 is an apocalyptic number.

It is an amenable number.

16488909 is a deficient number, since it is larger than the sum of its proper divisors (8139123).

16488909 is a wasteful number, since it uses less digits than its factorization.

16488909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 16488909 is about 4060.6537650974. The cubic root of 16488909 is about 254.5251138624.

The spelling of 16488909 in words is "sixteen million, four hundred eighty-eight thousand, nine hundred nine".