89835887 has 2 divisors, whose sum is σ = 89835888. Its totient is φ = 89835886.

The previous prime is 89835841. The next prime is 89835899. The reversal of 89835887 is 78853898.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89835887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89835587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44917943 + 44917944.

It is an arithmetic number, because the mean of its divisors is an integer number (44917944).

Almost surely, 2^89835887 is an apocalyptic number.

89835887 is a deficient number, since it is larger than the sum of its proper divisors (1).

89835887 is an equidigital number, since it uses as much as digits as its factorization.

89835887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 56.

The square root of 89835887 is about 9478.1795192959. The cubic root of 89835887 is about 447.8679175223.

The spelling of 89835887 in words is "eighty-nine million, eight hundred thirty-five thousand, eight hundred eighty-seven".