889745657 has 2 divisors, whose sum is σ = 889745658. Its totient is φ = 889745656.

The previous prime is 889745653. The next prime is 889745713. The reversal of 889745657 is 756547988.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487703056 + 402042601 = 22084^2 + 20051^2 .

It is a cyclic number.

It is not a de Polignac number, because 889745657 - 2² = 889745653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 889745596 and 889745605.

It is not a weakly prime, because it can be changed into another prime (889745651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444872828 + 444872829.

It is an arithmetic number, because the mean of its divisors is an integer number (444872829).

Almost surely, 2^889745657 is an apocalyptic number.

It is an amenable number.

889745657 is a deficient number, since it is larger than the sum of its proper divisors (1).

889745657 is an equidigital number, since it uses as much as digits as its factorization.

889745657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 59.

The square root of 889745657 is about 29828.6046773898. The cubic root of 889745657 is about 961.8085326996.

The spelling of 889745657 in words is "eight hundred eighty-nine million, seven hundred forty-five thousand, six hundred fifty-seven".