398840068 has 24 divisors (see below), whose sum is σ = 762429024. Its totient is φ = 181051200.

The previous prime is 398840063. The next prime is 398840069. The reversal of 398840068 is 860048893.

It is not an unprimeable number, because it can be changed into a prime (398840063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30096 + ... + 41272.

It is an arithmetic number, because the mean of its divisors is an integer number (31767876).

Almost surely, 2^398840068 is an apocalyptic number.

It is an amenable number.

398840068 is a deficient number, since it is larger than the sum of its proper divisors (363588956).

398840068 is a wasteful number, since it uses less digits than its factorization.

398840068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003 (or 12001 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 398840068 is about 19970.9806469287. The cubic root of 398840068 is about 736.0934058557.

The spelling of 398840068 in words is "three hundred ninety-eight million, eight hundred forty thousand, sixty-eight".