398844448893 has 24 divisors (see below), whose sum is σ = 628507766016. Its totient is φ = 241714060800.

The previous prime is 398844448889. The next prime is 398844448897.

398844448893 is a `hidden beast` number, since 3 + 98 + 8 + 4 + 4 + 448 + 8 + 93 = 666.

398844448893 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (398844448889) and next prime (398844448897).

It is not a de Polignac number, because 398844448893 - 2² = 398844448889 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398844448897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2907613 + ... + 3041693.

It is an arithmetic number, because the mean of its divisors is an integer number (26187823584).

Almost surely, 2^398844448893 is an apocalyptic number.

398844448893 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

398844448893 is a deficient number, since it is larger than the sum of its proper divisors (229663317123).

398844448893 is a wasteful number, since it uses less digits than its factorization.

398844448893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164145 (or 164142 counting only the distinct ones).

The product of its digits is 764411904, while the sum is 72.

The spelling of 398844448893 in words is "three hundred ninety-eight billion, eight hundred forty-four million, four hundred forty-eight thousand, eight hundred ninety-three".