16995899 has 4 divisors (see below), whose sum is σ = 17890440. Its totient is φ = 16101360.

The previous prime is 16995893. The next prime is 16995907. The reversal of 16995899 is 99859961.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16995899 - 2¹⁶ = 16930363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16995893) 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, 447242 + ... + 447279.

It is an arithmetic number, because the mean of its divisors is an integer number (4472610).

Almost surely, 2^16995899 is an apocalyptic number.

16995899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16995899 is a deficient number, since it is larger than the sum of its proper divisors (894541).

16995899 is an equidigital number, since it uses as much as digits as its factorization.

16995899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894540.

The product of its digits is 1574640, while the sum is 56.

The square root of 16995899 is about 4122.6082763222. The cubic root of 16995899 is about 257.1074812740.

The spelling of 16995899 in words is "sixteen million, nine hundred ninety-five thousand, eight hundred ninety-nine".