16394985 has 12 divisors (see below), whose sum is σ = 28418052. Its totient is φ = 8743968.

The previous prime is 16394977. The next prime is 16394999. The reversal of 16394985 is 58949361.

It is a happy number.

16394985 is a `hidden beast` number, since 1 + 639 + 4 + 9 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 13111641 = 1812^2 + 3621^2 .

It is not a de Polignac number, because 16394985 - 2³ = 16394977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 364333 = 16394985 / (1 + 6 + 3 + 9 + 4 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 16394985.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182122 + ... + 182211.

It is an arithmetic number, because the mean of its divisors is an integer number (2368171).

Almost surely, 2^16394985 is an apocalyptic number.

16394985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16394985 is a deficient number, since it is larger than the sum of its proper divisors (12023067).

16394985 is a wasteful number, since it uses less digits than its factorization.

16394985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364344 (or 364341 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 16394985 is about 4049.0721159298. The cubic root of 16394985 is about 254.0409186563.

The spelling of 16394985 in words is "sixteen million, three hundred ninety-four thousand, nine hundred eighty-five".