16946999 has 4 divisors (see below), whose sum is σ = 17405064. Its totient is φ = 16488936.

The previous prime is 16946971. The next prime is 16947013. The reversal of 16946999 is 99964961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99964961 = 3319 ⋅30119.

It is a cyclic number.

It is not a de Polignac number, because 16946999 - 2²⁰ = 15898423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16946999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16946099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228977 + ... + 229050.

It is an arithmetic number, because the mean of its divisors is an integer number (4351266).

Almost surely, 2^16946999 is an apocalyptic number.

16946999 is a deficient number, since it is larger than the sum of its proper divisors (458065).

16946999 is an equidigital number, since it uses as much as digits as its factorization.

16946999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458064.

The product of its digits is 944784, while the sum is 53.

The square root of 16946999 is about 4116.6732928422. The cubic root of 16946999 is about 256.8606642248.

The spelling of 16946999 in words is "sixteen million, nine hundred forty-six thousand, nine hundred ninety-nine".