398545284 has 24 divisors (see below), whose sum is σ = 930460608. Its totient is φ = 132773920.

The previous prime is 398545271. The next prime is 398545291. The reversal of 398545284 is 482545893.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15649 + ... + 32279.

It is an arithmetic number, because the mean of its divisors is an integer number (38769192).

Almost surely, 2^398545284 is an apocalyptic number.

It is an amenable number.

398545284 is an abundant number, since it is smaller than the sum of its proper divisors (531915324).

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

398545284 is a wasteful number, since it uses less digits than its factorization.

398545284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18635 (or 18633 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 398545284 is about 19963.5989741329. The cubic root of 398545284 is about 735.9120114765.

The spelling of 398545284 in words is "three hundred ninety-eight million, five hundred forty-five thousand, two hundred eighty-four".