16971199 has 12 divisors (see below), whose sum is σ = 20782200. Its totient is φ = 13780368.

The previous prime is 16971193. The next prime is 16971203. The reversal of 16971199 is 99117961.

It is a happy number.

It is not a de Polignac number, because 16971199 - 2⁹ = 16970687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16971193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8184 + ... + 10045.

It is an arithmetic number, because the mean of its divisors is an integer number (1731850).

Almost surely, 2^16971199 is an apocalyptic number.

16971199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16971199 is a deficient number, since it is larger than the sum of its proper divisors (3811001).

16971199 is a wasteful number, since it uses less digits than its factorization.

16971199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18262 (or 18255 counting only the distinct ones).

The product of its digits is 30618, while the sum is 43.

The square root of 16971199 is about 4119.6115108102. The cubic root of 16971199 is about 256.9828701609.

The spelling of 16971199 in words is "sixteen million, nine hundred seventy-one thousand, one hundred ninety-nine".