398887895141 has 4 divisors (see below), whose sum is σ = 399109378284. Its totient is φ = 398666412000.

The previous prime is 398887895099. The next prime is 398887895179. The reversal of 398887895141 is 141598788893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225876820225 + 173011074916 = 475265^2 + 415946^2 .

It is a cyclic number.

It is not a de Polignac number, because 398887895141 - 2¹⁰ = 398887894117 is a prime.

It is a super-2 number, since 2×398887895141² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398887895941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110738870 + ... + 110742471.

It is an arithmetic number, because the mean of its divisors is an integer number (99777344571).

Almost surely, 2^398887895141 is an apocalyptic number.

It is an amenable number.

398887895141 is a deficient number, since it is larger than the sum of its proper divisors (221483143).

398887895141 is a wasteful number, since it uses less digits than its factorization.

398887895141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221483142.

The product of its digits is 139345920, while the sum is 71.

The spelling of 398887895141 in words is "three hundred ninety-eight billion, eight hundred eighty-seven million, eight hundred ninety-five thousand, one hundred forty-one".