399343267998 has 24 divisors (see below), whose sum is σ = 877096404288. Its totient is φ = 131290936992.

The previous prime is 399343267997. The next prime is 399343268017. The reversal of 399343267998 is 899762343993.

399343267998 is a `hidden beast` number, since 39 + 9 + 3 + 432 + 6 + 79 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399343267997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151955790 + ... + 151958417.

It is an arithmetic number, because the mean of its divisors is an integer number (36545683512).

Almost surely, 2^399343267998 is an apocalyptic number.

399343267998 is an abundant number, since it is smaller than the sum of its proper divisors (477753136290).

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

399343267998 is a wasteful number, since it uses less digits than its factorization.

399343267998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303914288 (or 303914285 counting only the distinct ones).

The product of its digits is 476171136, while the sum is 72.

The spelling of 399343267998 in words is "three hundred ninety-nine billion, three hundred forty-three million, two hundred sixty-seven thousand, nine hundred ninety-eight".