398254960 has 20 divisors (see below), whose sum is σ = 925942968. Its totient is φ = 159301952.

The previous prime is 398254957. The next prime is 398254981. The reversal of 398254960 is 69452893.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 398254960.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489014 + ... + 2489173.

Almost surely, 2^398254960 is an apocalyptic number.

It is an amenable number.

398254960 is an abundant number, since it is smaller than the sum of its proper divisors (527688008).

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

398254960 is a wasteful number, since it uses less digits than its factorization.

398254960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978200 (or 4978194 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 398254960 is about 19956.3263152315. The cubic root of 398254960 is about 735.7332740971.

The spelling of 398254960 in words is "three hundred ninety-eight million, two hundred fifty-four thousand, nine hundred sixty".