89896861 has 2 divisors, whose sum is σ = 89896862. Its totient is φ = 89896860.

The previous prime is 89896783. The next prime is 89896871. The reversal of 89896861 is 16869898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73856836 + 16040025 = 8594^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 89896861 - 2⁹ = 89896349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89896871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44948430 + 44948431.

It is an arithmetic number, because the mean of its divisors is an integer number (44948431).

Almost surely, 2^89896861 is an apocalyptic number.

It is an amenable number.

89896861 is a deficient number, since it is larger than the sum of its proper divisors (1).

89896861 is an equidigital number, since it uses as much as digits as its factorization.

89896861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 55.

The square root of 89896861 is about 9481.3955196479. The cubic root of 89896861 is about 447.9692212193.

The spelling of 89896861 in words is "eighty-nine million, eight hundred ninety-six thousand, eight hundred sixty-one".