399416716 has 24 divisors (see below), whose sum is σ = 715470336. Its totient is φ = 195016080.

The previous prime is 399416713. The next prime is 399416729. The reversal of 399416716 is 617614993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (399416713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90145 + ... + 94471.

It is an arithmetic number, because the mean of its divisors is an integer number (29811264).

Almost surely, 2^399416716 is an apocalyptic number.

It is an amenable number.

399416716 is a deficient number, since it is larger than the sum of its proper divisors (316053620).

399416716 is a wasteful number, since it uses less digits than its factorization.

399416716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869 (or 4867 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 399416716 is about 19985.4125801796. The cubic root of 399416716 is about 736.4479860680.

The spelling of 399416716 in words is "three hundred ninety-nine million, four hundred sixteen thousand, seven hundred sixteen".