16971899 has 16 divisors (see below), whose sum is σ = 20717568. Its totient is φ = 13571712.

The previous prime is 16971893. The next prime is 16971919. The reversal of 16971899 is 99817961.

It is not a de Polignac number, because 16971899 - 2²⁴ = 194683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16971893) 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, 14552 + ... + 15674.

It is an arithmetic number, because the mean of its divisors is an integer number (1294848).

Almost surely, 2^16971899 is an apocalyptic number.

16971899 is a deficient number, since it is larger than the sum of its proper divisors (3745669).

16971899 is a wasteful number, since it uses less digits than its factorization.

16971899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its digits is 244944, while the sum is 50.

The square root of 16971899 is about 4119.6964694016. The cubic root of 16971899 is about 256.9864033140.

The spelling of 16971899 in words is "sixteen million, nine hundred seventy-one thousand, eight hundred ninety-nine".