988444444891 has 2 divisors, whose sum is σ = 988444444892. Its totient is φ = 988444444890.

The previous prime is 988444444861. The next prime is 988444444901. The reversal of 988444444891 is 198444444889.

988444444891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 988444444891 - 2²⁹ = 987907573979 is a prime.

It is not a weakly prime, because it can be changed into another prime (988444444811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494222222445 + 494222222446.

It is an arithmetic number, because the mean of its divisors is an integer number (494222222446).

Almost surely, 2^988444444891 is an apocalyptic number.

988444444891 is a deficient number, since it is larger than the sum of its proper divisors (1).

988444444891 is an equidigital number, since it uses as much as digits as its factorization.

988444444891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169869312, while the sum is 67.

The spelling of 988444444891 in words is "nine hundred eighty-eight billion, four hundred forty-four million, four hundred forty-four thousand, eight hundred ninety-one".