889745971 has 2 divisors, whose sum is σ = 889745972. Its totient is φ = 889745970.

The previous prime is 889745951. The next prime is 889745999. The reversal of 889745971 is 179547988.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889745971 - 2¹¹ = 889743923 is a prime.

It is not a weakly prime, because it can be changed into another prime (889745951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444872985 + 444872986.

It is an arithmetic number, because the mean of its divisors is an integer number (444872986).

Almost surely, 2^889745971 is an apocalyptic number.

889745971 is a deficient number, since it is larger than the sum of its proper divisors (1).

889745971 is an equidigital number, since it uses as much as digits as its factorization.

889745971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 58.

The square root of 889745971 is about 29828.6099407934. The cubic root of 889745971 is about 961.8086458435.

The spelling of 889745971 in words is "eight hundred eighty-nine million, seven hundred forty-five thousand, nine hundred seventy-one".