889475261 has 2 divisors, whose sum is σ = 889475262. Its totient is φ = 889475260.

The previous prime is 889475243. The next prime is 889475263. The reversal of 889475261 is 162574988.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889172761 + 302500 = 29819^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 889475261 - 2¹⁴ = 889458877 is a prime.

Together with 889475263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889475263) 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, 444737630 + 444737631.

It is an arithmetic number, because the mean of its divisors is an integer number (444737631).

Almost surely, 2^889475261 is an apocalyptic number.

It is an amenable number.

889475261 is a deficient number, since it is larger than the sum of its proper divisors (1).

889475261 is an equidigital number, since it uses as much as digits as its factorization.

889475261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 889475261 is about 29824.0718380304. The cubic root of 889475261 is about 961.7110907968.

The spelling of 889475261 in words is "eight hundred eighty-nine million, four hundred seventy-five thousand, two hundred sixty-one".