398328571 has 4 divisors (see below), whose sum is σ = 408043944. Its totient is φ = 388613200.

The previous prime is 398328551. The next prime is 398328577. The reversal of 398328571 is 175823893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 175823893 = 7 ⋅25117699.

It is a cyclic number.

It is not a de Polignac number, because 398328571 - 2⁹ = 398328059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398328577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857625 + ... + 4857706.

It is an arithmetic number, because the mean of its divisors is an integer number (102010986).

Almost surely, 2^398328571 is an apocalyptic number.

398328571 is a deficient number, since it is larger than the sum of its proper divisors (9715373).

398328571 is an equidigital number, since it uses as much as digits as its factorization.

398328571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9715372.

The product of its digits is 362880, while the sum is 46.

The square root of 398328571 is about 19958.1705323910. The cubic root of 398328571 is about 735.7786007773.

The spelling of 398328571 in words is "three hundred ninety-eight million, three hundred twenty-eight thousand, five hundred seventy-one".