16406199 has 32 divisors (see below), whose sum is σ = 26265600. Its totient is φ = 10090080.

The previous prime is 16406197. The next prime is 16406213. The reversal of 16406199 is 99160461.

16406199 is a `hidden beast` number, since 1 + 640 + 6 + 1 + 9 + 9 = 666.

It is not a de Polignac number, because 16406199 - 2¹ = 16406197 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16406197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17554 + ... + 18464.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^16406199 is an apocalyptic number.

16406199 is a deficient number, since it is larger than the sum of its proper divisors (9859401).

16406199 is a wasteful number, since it uses less digits than its factorization.

16406199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 16406199 is about 4050.4566409233. The cubic root of 16406199 is about 254.0988259084.

The spelling of 16406199 in words is "sixteen million, four hundred six thousand, one hundred ninety-nine".