889146478841 has 2 divisors, whose sum is σ = 889146478842. Its totient is φ = 889146478840.

The previous prime is 889146478837. The next prime is 889146478859. The reversal of 889146478841 is 148874641988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868663144441 + 20483334400 = 932021^2 + 143120^2 .

It is a cyclic number.

It is not a de Polignac number, because 889146478841 - 2² = 889146478837 is a prime.

It is not a weakly prime, because it can be changed into another prime (889146478541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444573239420 + 444573239421.

It is an arithmetic number, because the mean of its divisors is an integer number (444573239421).

Almost surely, 2^889146478841 is an apocalyptic number.

It is an amenable number.

889146478841 is a deficient number, since it is larger than the sum of its proper divisors (1).

889146478841 is an equidigital number, since it uses as much as digits as its factorization.

889146478841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99090432, while the sum is 68.

The spelling of 889146478841 in words is "eight hundred eighty-nine billion, one hundred forty-six million, four hundred seventy-eight thousand, eight hundred forty-one".