398520025893 has 24 divisors (see below), whose sum is σ = 648952113600. Its totient is φ = 241527286440.

The previous prime is 398520025879. The next prime is 398520025913.

398520025893 is a `hidden beast` number, since 3 + 9 + 8 + 52 + 0 + 0 + 2 + 589 + 3 = 666.

398520025893 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 398520025893 - 2¹⁶ = 398519960357 is a prime.

It is a super-2 number, since 2×398520025893² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398520025193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60988473 + ... + 60995006.

It is an arithmetic number, because the mean of its divisors is an integer number (27039671400).

Almost surely, 2^398520025893 is an apocalyptic number.

398520025893 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

398520025893 is a deficient number, since it is larger than the sum of its proper divisors (250432087707).

398520025893 is a wasteful number, since it uses less digits than its factorization.

398520025893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121983510 (or 121983493 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 398520025893 in words is "three hundred ninety-eight billion, five hundred twenty million, twenty-five thousand, eight hundred ninety-three".