399416199 has 48 divisors (see below), whose sum is σ = 681504768. Its totient is φ = 206152128.

The previous prime is 399416197. The next prime is 399416203. The reversal of 399416199 is 991614993.

It is not a de Polignac number, because 399416199 - 2¹ = 399416197 is a prime.

It is a Smith number, since the sum of its digits (51) 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 (399416197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87594 + ... + 92040.

It is an arithmetic number, because the mean of its divisors is an integer number (14198016).

Almost surely, 2^399416199 is an apocalyptic number.

399416199 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

399416199 is a deficient number, since it is larger than the sum of its proper divisors (282088569).

399416199 is a wasteful number, since it uses less digits than its factorization.

399416199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524 (or 4517 counting only the distinct ones).

The product of its digits is 472392, while the sum is 51.

The square root of 399416199 is about 19985.3996457414. The cubic root of 399416199 is about 736.4476683181.

The spelling of 399416199 in words is "three hundred ninety-nine million, four hundred sixteen thousand, one hundred ninety-nine".