399319071 has 8 divisors (see below), whose sum is σ = 532666800. Its totient is φ = 266092032.

The previous prime is 399319057. The next prime is 399319087. The reversal of 399319071 is 170913993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 399319071 - 2²¹ = 397221919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399319871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22146 + ... + 35903.

It is an arithmetic number, because the mean of its divisors is an integer number (66583350).

Almost surely, 2^399319071 is an apocalyptic number.

399319071 is a deficient number, since it is larger than the sum of its proper divisors (133347729).

399319071 is a wasteful number, since it uses less digits than its factorization.

399319071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60345.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 399319071 is about 19982.9695240722. The cubic root of 399319071 is about 736.3879682791.

The spelling of 399319071 in words is "three hundred ninety-nine million, three hundred nineteen thousand, seventy-one".