398527386317 has 16 divisors (see below), whose sum is σ = 416922769920. Its totient is φ = 380554987968.

The previous prime is 398527386263. The next prime is 398527386319. The reversal of 398527386317 is 713683725893.

It is a cyclic number.

It is not a de Polignac number, because 398527386317 - 2¹⁰ = 398527385293 is a prime.

It is a super-4 number, since 4×398527386317⁴ (a number of 48 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398527386317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398527386319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1174703 + ... + 1475459.

It is an arithmetic number, because the mean of its divisors is an integer number (26057673120).

Almost surely, 2^398527386317 is an apocalyptic number.

398527386317 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

398527386317 is a deficient number, since it is larger than the sum of its proper divisors (18395383603).

398527386317 is a wasteful number, since it uses less digits than its factorization.

398527386317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301460.

The product of its digits is 45722880, while the sum is 62.

The spelling of 398527386317 in words is "three hundred ninety-eight billion, five hundred twenty-seven million, three hundred eighty-six thousand, three hundred seventeen".