398804864571 has 12 divisors (see below), whose sum is σ = 576099484272. Its totient is φ = 265847749776.

The previous prime is 398804864531. The next prime is 398804864587. The reversal of 398804864571 is 175468408893.

398804864571 is a `hidden beast` number, since 3 + 9 + 8 + 80 + 486 + 4 + 5 + 71 = 666.

It is not a de Polignac number, because 398804864571 - 2¹⁷ = 398804733499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398804864499 and 398804864508.

It is not an unprimeable number, because it can be changed into a prime (398804864531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1732311 + ... + 1948976.

It is an arithmetic number, because the mean of its divisors is an integer number (48008290356).

Almost surely, 2^398804864571 is an apocalyptic number.

398804864571 is a deficient number, since it is larger than the sum of its proper divisors (177294619701).

398804864571 is a wasteful number, since it uses less digits than its factorization.

398804864571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693330 (or 3693327 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 398804864571 in words is "three hundred ninety-eight billion, eight hundred four million, eight hundred sixty-four thousand, five hundred seventy-one".