8851961 has 2 divisors, whose sum is σ = 8851962. Its totient is φ = 8851960.

The previous prime is 8851949. The next prime is 8851963. The reversal of 8851961 is 1691588.

8851961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6661561 + 2190400 = 2581^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 8851961 - 2⁶ = 8851897 is a prime.

Together with 8851963, 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 (8851963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4425980 + 4425981.

It is an arithmetic number, because the mean of its divisors is an integer number (4425981).

Almost surely, 2^8851961 is an apocalyptic number.

It is an amenable number.

8851961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8851961 is an equidigital number, since it uses as much as digits as its factorization.

8851961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 38.

The square root of 8851961 is about 2975.2245293423. The cubic root of 8851961 is about 206.8615767281.

The spelling of 8851961 in words is "eight million, eight hundred fifty-one thousand, nine hundred sixty-one".