998855481 has 32 divisors (see below), whose sum is σ = 1454124672. Its totient is φ = 606228480.

The previous prime is 998855467. The next prime is 998855483. The reversal of 998855481 is 184558899.

It is a de Polignac number, because none of the positive numbers 2^k-998855481 is a prime.

It is a super-2 number, since 2×998855481² = 1995424543847482722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998855483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985531 + ... + 986543.

It is an arithmetic number, because the mean of its divisors is an integer number (45441396).

Almost surely, 2^998855481 is an apocalyptic number.

It is an amenable number.

998855481 is a deficient number, since it is larger than the sum of its proper divisors (455269191).

998855481 is a wasteful number, since it uses less digits than its factorization.

998855481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its digits is 4147200, while the sum is 57.

The square root of 998855481 is about 31604.6749864636. The cubic root of 998855481 is about 999.6183480270.

The spelling of 998855481 in words is "nine hundred ninety-eight million, eight hundred fifty-five thousand, four hundred eighty-one".