398298580 has 12 divisors (see below), whose sum is σ = 836427060. Its totient is φ = 159319424.

The previous prime is 398298517. The next prime is 398298583. The reversal of 398298580 is 85892893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 147962896 + 250335684 = 12164^2 + 15822^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398298583) 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, 9957445 + ... + 9957484.

It is an arithmetic number, because the mean of its divisors is an integer number (69702255).

Almost surely, 2^398298580 is an apocalyptic number.

It is an amenable number.

398298580 is an abundant number, since it is smaller than the sum of its proper divisors (438128480).

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

398298580 is a wasteful number, since it uses less digits than its factorization.

398298580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19914938 (or 19914936 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 398298580 is about 19957.4191718268. The cubic root of 398298580 is about 735.7601342052.

The spelling of 398298580 in words is "three hundred ninety-eight million, two hundred ninety-eight thousand, five hundred eighty".