16394649 has 16 divisors (see below), whose sum is σ = 22522752. Its totient is φ = 10603008.

The previous prime is 16394641. The next prime is 16394669. The reversal of 16394649 is 94649361.

It is not a de Polignac number, because 16394649 - 2³ = 16394641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16394649.

It is not an unprimeable number, because it can be changed into a prime (16394641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14892 + ... + 15954.

It is an arithmetic number, because the mean of its divisors is an integer number (1407672).

Almost surely, 2^16394649 is an apocalyptic number.

It is an amenable number.

16394649 is a deficient number, since it is larger than the sum of its proper divisors (6128103).

16394649 is a wasteful number, since it uses less digits than its factorization.

16394649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its digits is 139968, while the sum is 42.

The square root of 16394649 is about 4049.0306247298. The cubic root of 16394649 is about 254.0391832002.

The spelling of 16394649 in words is "sixteen million, three hundred ninety-four thousand, six hundred forty-nine".