399343827608 has 64 divisors (see below), whose sum is σ = 821365816320. Its totient is φ = 180515836800.

The previous prime is 399343827607. The next prime is 399343827643. The reversal of 399343827608 is 806728343993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399343827607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19554923 + ... + 19575333.

It is an arithmetic number, because the mean of its divisors is an integer number (12833840880).

Almost surely, 2^399343827608 is an apocalyptic number.

It is an amenable number.

399343827608 is an abundant number, since it is smaller than the sum of its proper divisors (422021988712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399343827608 is a wasteful number, since it uses less digits than its factorization.

399343827608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21648 (or 21644 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 62.

The spelling of 399343827608 in words is "three hundred ninety-nine billion, three hundred forty-three million, eight hundred twenty-seven thousand, six hundred eight".