398882177863 has 4 divisors (see below), whose sum is σ = 429565422328. Its totient is φ = 368198933400.

The previous prime is 398882177843. The next prime is 398882177921. The reversal of 398882177863 is 368771288893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368771288893 = 7 ⋅52681612699.

It is a cyclic number.

It is not a de Polignac number, because 398882177863 - 2¹³ = 398882169671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398882177792 and 398882177801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398882177803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15341622213 + ... + 15341622238.

It is an arithmetic number, because the mean of its divisors is an integer number (107391355582).

Almost surely, 2^398882177863 is an apocalyptic number.

398882177863 is a deficient number, since it is larger than the sum of its proper divisors (30683244465).

398882177863 is a wasteful number, since it uses less digits than its factorization.

398882177863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30683244464.

The product of its digits is 195084288, while the sum is 70.

The spelling of 398882177863 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, one hundred seventy-seven thousand, eight hundred sixty-three".