398558355 has 32 divisors (see below), whose sum is σ = 701374464. Its totient is φ = 192034176.

The previous prime is 398558341. The next prime is 398558389. The reversal of 398558355 is 553855893.

It is not a de Polignac number, because 398558355 - 2⁶ = 398558291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398558298 and 398558307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12579 + ... + 30908.

It is an arithmetic number, because the mean of its divisors is an integer number (21917952).

Almost surely, 2^398558355 is an apocalyptic number.

398558355 is a deficient number, since it is larger than the sum of its proper divisors (302816109).

398558355 is a wasteful number, since it uses less digits than its factorization.

398558355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43555.

The product of its digits is 3240000, while the sum is 51.

The square root of 398558355 is about 19963.9263422805. The cubic root of 398558355 is about 735.9200565688.

The spelling of 398558355 in words is "three hundred ninety-eight million, five hundred fifty-eight thousand, three hundred fifty-five".