889439342819 has 2 divisors, whose sum is σ = 889439342820. Its totient is φ = 889439342818.

The previous prime is 889439342807. The next prime is 889439342821. The reversal of 889439342819 is 918243934988.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 889439342819 - 2²⁰ = 889438294243 is a prime.

It is a super-2 number, since 2×889439342819² (a number of 25 digits) contains 22 as substring.

Together with 889439342821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (889439342879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444719671409 + 444719671410.

It is an arithmetic number, because the mean of its divisors is an integer number (444719671410).

Almost surely, 2^889439342819 is an apocalyptic number.

889439342819 is a deficient number, since it is larger than the sum of its proper divisors (1).

889439342819 is an equidigital number, since it uses as much as digits as its factorization.

889439342819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107495424, while the sum is 68.

The spelling of 889439342819 in words is "eight hundred eighty-nine billion, four hundred thirty-nine million, three hundred forty-two thousand, eight hundred nineteen".