89830621843 has 2 divisors, whose sum is σ = 89830621844. Its totient is φ = 89830621842.

The previous prime is 89830621831. The next prime is 89830621849. The reversal of 89830621843 is 34812603898.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89830621843 is a prime.

It is not a weakly prime, because it can be changed into another prime (89830621849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44915310921 + 44915310922.

It is an arithmetic number, because the mean of its divisors is an integer number (44915310922).

Almost surely, 2^89830621843 is an apocalyptic number.

89830621843 is a deficient number, since it is larger than the sum of its proper divisors (1).

89830621843 is an equidigital number, since it uses as much as digits as its factorization.

89830621843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 89830621843 in words is "eighty-nine billion, eight hundred thirty million, six hundred twenty-one thousand, eight hundred forty-three".