398647848 has 64 divisors (see below), whose sum is σ = 1032192000. Its totient is φ = 128168640.

The previous prime is 398647831. The next prime is 398647877. The reversal of 398647848 is 848746893.

It is a super-2 number, since 2×398647848² = 317840213430062208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284253 + ... + 285651.

It is an arithmetic number, because the mean of its divisors is an integer number (16128000).

Almost surely, 2^398647848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398647848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516096000).

398647848 is an abundant number, since it is smaller than the sum of its proper divisors (633544152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398647848 is a wasteful number, since it uses less digits than its factorization.

398647848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1818 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 398647848 is about 19966.1675841910. The cubic root of 398647848 is about 735.9751340449.

The spelling of 398647848 in words is "three hundred ninety-eight million, six hundred forty-seven thousand, eight hundred forty-eight".