399468279663 has 8 divisors (see below), whose sum is σ = 591804858800. Its totient is φ = 266312186424.

The previous prime is 399468279641. The next prime is 399468279677. The reversal of 399468279663 is 366972864993.

399468279663 is a `hidden beast` number, since 3 + 99 + 468 + 2 + 79 + 6 + 6 + 3 = 666.

399468279663 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 399468279663 - 2⁵ = 399468279631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399468279591 and 399468279600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399468272663) 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, 7397560708 + ... + 7397560761.

It is an arithmetic number, because the mean of its divisors is an integer number (73975607350).

Almost surely, 2^399468279663 is an apocalyptic number.

399468279663 is a deficient number, since it is larger than the sum of its proper divisors (192336579137).

399468279663 is a wasteful number, since it uses less digits than its factorization.

399468279663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14795121478 (or 14795121472 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 72.

The spelling of 399468279663 in words is "three hundred ninety-nine billion, four hundred sixty-eight million, two hundred seventy-nine thousand, six hundred sixty-three".