89980843 has 2 divisors, whose sum is σ = 89980844. Its totient is φ = 89980842.

The previous prime is 89980829. The next prime is 89980867. The reversal of 89980843 is 34808998.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89980843 - 2²⁵ = 56426411 is a prime.

It is not a weakly prime, because it can be changed into another prime (89980343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44990421 + 44990422.

It is an arithmetic number, because the mean of its divisors is an integer number (44990422).

Almost surely, 2^89980843 is an apocalyptic number.

89980843 is a deficient number, since it is larger than the sum of its proper divisors (1).

89980843 is an equidigital number, since it uses as much as digits as its factorization.

89980843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 89980843 is about 9485.8232642191. The cubic root of 89980843 is about 448.1086760029.

The spelling of 89980843 in words is "eighty-nine million, nine hundred eighty thousand, eight hundred forty-three".