16394 has 8 divisors (see below), whose sum is σ = 28128. Its totient is φ = 7020.

The previous prime is 16381. The next prime is 16411. The reversal of 16394 is 49361.

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

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572 + ... + 599.

It is an arithmetic number, because the mean of its divisors is an integer number (3516).

2¹⁶³⁹⁴ is an apocalyptic number.

16394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16394 is a deficient number, since it is larger than the sum of its proper divisors (11734).

16394 is a wasteful number, since it uses less digits than its factorization.

16394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180.

The product of its digits is 648, while the sum is 23.

The square root of 16394 is about 128.0390565414. The cubic root of 16394 is about 25.4035831017.

It can be divided in two parts, 1639 and 4, that multiplied together give a palindrome (6556).

The spelling of 16394 in words is "sixteen thousand, three hundred ninety-four".