16390559 has 8 divisors (see below), whose sum is σ = 18003840. Its totient is φ = 14852376.

The previous prime is 16390553. The next prime is 16390571. The reversal of 16390559 is 95509361.

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

It is not a de Polignac number, because 16390559 - 2²⁰ = 15341983 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 (16390553) 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, 18317 + ... + 19190.

It is an arithmetic number, because the mean of its divisors is an integer number (2250480).

Almost surely, 2^16390559 is an apocalyptic number.

16390559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16390559 is a deficient number, since it is larger than the sum of its proper divisors (1613281).

16390559 is a wasteful number, since it uses less digits than its factorization.

16390559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37549.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 16390559 is about 4048.5255340679. The cubic root of 16390559 is about 254.0180562525.

The spelling of 16390559 in words is "sixteen million, three hundred ninety thousand, five hundred fifty-nine".