16394229 has 12 divisors (see below), whose sum is σ = 23765196. Its totient is φ = 10890432.

The previous prime is 16394227. The next prime is 16394233. The reversal of 16394229 is 92249361.

It can be written as a sum of positive squares in 2 ways, for example, as 14062500 + 2331729 = 3750^2 + 1527^2 .

It is not a de Polignac number, because 16394229 - 2¹ = 16394227 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16394193 and 16394202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16394227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472 + ... + 5745.

It is an arithmetic number, because the mean of its divisors is an integer number (1980433).

Almost surely, 2^16394229 is an apocalyptic number.

It is an amenable number.

16394229 is a deficient number, since it is larger than the sum of its proper divisors (7370967).

16394229 is a wasteful number, since it uses less digits than its factorization.

16394229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516 (or 6513 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16394229 is about 4048.9787601320. The cubic root of 16394229 is about 254.0370138466.

The spelling of 16394229 in words is "sixteen million, three hundred ninety-four thousand, two hundred twenty-nine".