398488 has 8 divisors (see below), whose sum is σ = 747180. Its totient is φ = 199240.

The previous prime is 398477. The next prime is 398491. The reversal of 398488 is 884893.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×398488² = 317585372288, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 398488.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24898 + ... + 24913.

2³⁹⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

398488 is a deficient number, since it is larger than the sum of its proper divisors (348692).

398488 is a wasteful number, since it uses less digits than its factorization.

398488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49817 (or 49813 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 398488 is about 631.2590593409. The cubic root of 398488 is about 73.5876751574.

The spelling of 398488 in words is "three hundred ninety-eight thousand, four hundred eighty-eight".