3998054860827 has 4 divisors (see below), whose sum is σ = 5330739814440. Its totient is φ = 2665369907216.

The previous prime is 3998054860819. The next prime is 3998054860901. The reversal of 3998054860827 is 7280684508993.

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

It is a cyclic number.

It is not a de Polignac number, because 3998054860827 - 2³ = 3998054860819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3998054867827) 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, 666342476802 + ... + 666342476807.

It is an arithmetic number, because the mean of its divisors is an integer number (1332684953610).

Almost surely, 2^{3998054860827} is an apocalyptic number.

3998054860827 is a deficient number, since it is larger than the sum of its proper divisors (1332684953613).

3998054860827 is a wasteful number, since it uses less digits than its factorization.

3998054860827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332684953612.

The product of its (nonzero) digits is 209018880, while the sum is 69.

The spelling of 3998054860827 in words is "three trillion, nine hundred ninety-eight billion, fifty-four million, eight hundred sixty thousand, eight hundred twenty-seven".