16390839 has 16 divisors (see below), whose sum is σ = 23221728. Its totient is φ = 10248192.

The previous prime is 16390837. The next prime is 16390867. The reversal of 16390839 is 93809361.

It is not a de Polignac number, because 16390839 - 2¹ = 16390837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16390797 and 16390806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28119 + ... + 28695.

It is an arithmetic number, because the mean of its divisors is an integer number (1451358).

Almost surely, 2^16390839 is an apocalyptic number.

16390839 is a deficient number, since it is larger than the sum of its proper divisors (6830889).

16390839 is a wasteful number, since it uses less digits than its factorization.

16390839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 16390839 is about 4048.5601144110. The cubic root of 16390839 is about 254.0195027082.

The spelling of 16390839 in words is "sixteen million, three hundred ninety thousand, eight hundred thirty-nine".