398479756286284 has 12 divisors (see below), whose sum is σ = 697340170724400. Its totient is φ = 199239707507888.

The previous prime is 398479756286281. The next prime is 398479756286299. The reversal of 398479756286284 is 482682657974893.

It is a super-2 number, since 2×398479756286284² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398479756286195 and 398479756286204.

It is not an unprimeable number, because it can be changed into a prime (398479756286281) 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 3 ways as a sum of consecutive naturals, for example, 37330504 + ... + 46803055.

It is an arithmetic number, because the mean of its divisors is an integer number (58111680893700).

Almost surely, 2^{398479756286284} is an apocalyptic number.

It is an amenable number.

398479756286284 is a deficient number, since it is larger than the sum of its proper divisors (298860414438116).

398479756286284 is a wasteful number, since it uses less digits than its factorization.

398479756286284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85317632 (or 85317630 counting only the distinct ones).

The product of its digits is 70230343680, while the sum is 88.

The spelling of 398479756286284 in words is "three hundred ninety-eight trillion, four hundred seventy-nine billion, seven hundred fifty-six million, two hundred eighty-six thousand, two hundred eighty-four".