89881859 has 2 divisors, whose sum is σ = 89881860. Its totient is φ = 89881858.

The previous prime is 89881829. The next prime is 89881867. The reversal of 89881859 is 95818898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89881859 - 2¹⁶ = 89816323 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (89881829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44940929 + 44940930.

It is an arithmetic number, because the mean of its divisors is an integer number (44940930).

Almost surely, 2^89881859 is an apocalyptic number.

89881859 is a deficient number, since it is larger than the sum of its proper divisors (1).

89881859 is an equidigital number, since it uses as much as digits as its factorization.

89881859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 56.

The square root of 89881859 is about 9480.6043583729. The cubic root of 89881859 is about 447.9443007788.

The spelling of 89881859 in words is "eighty-nine million, eight hundred eighty-one thousand, eight hundred fifty-nine".