398344555 has 16 divisors (see below), whose sum is σ = 556611264. Its totient is φ = 267995520.

The previous prime is 398344523. The next prime is 398344591. The reversal of 398344555 is 555443893.

It is not a de Polignac number, because 398344555 - 2⁵ = 398344523 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 105516 + ... + 109225.

It is an arithmetic number, because the mean of its divisors is an integer number (34788204).

Almost surely, 2^398344555 is an apocalyptic number.

398344555 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

398344555 is a deficient number, since it is larger than the sum of its proper divisors (158266709).

398344555 is a wasteful number, since it uses less digits than its factorization.

398344555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214806.

The product of its digits is 1296000, while the sum is 46.

The square root of 398344555 is about 19958.5709658783. The cubic root of 398344555 is about 735.7884423408.

The spelling of 398344555 in words is "three hundred ninety-eight million, three hundred forty-four thousand, five hundred fifty-five".