598440 has 32 divisors (see below), whose sum is σ = 1795680. Its totient is φ = 159552.

The previous prime is 598439. The next prime is 598447. The reversal of 598440 is 44895.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 598398 and 598407.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 598440.

It is not an unprimeable number, because it can be changed into a prime (598447) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (56115).

2⁵⁹⁸⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

598440 is an abundant number, since it is smaller than the sum of its proper divisors (1197240).

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

598440 is a wasteful number, since it uses less digits than its factorization.

598440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 598440 is about 773.5890381850. The cubic root of 598440 is about 84.2701055897.

The spelling of 598440 in words is "five hundred ninety-eight thousand, four hundred forty".