89809443 has 6 divisors (see below), whose sum is σ = 129724764. Its totient is φ = 59872956.

The previous prime is 89809441. The next prime is 89809463. The reversal of 89809443 is 34490898.

It is a happy number.

It is not a de Polignac number, because 89809443 - 2¹ = 89809441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89809441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4989405 + ... + 4989422.

It is an arithmetic number, because the mean of its divisors is an integer number (21620794).

Almost surely, 2^89809443 is an apocalyptic number.

89809443 is a deficient number, since it is larger than the sum of its proper divisors (39915321).

89809443 is a wasteful number, since it uses less digits than its factorization.

89809443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978833 (or 9978830 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 89809443 is about 9476.7844229992. The cubic root of 89809443 is about 447.8239685621.

The spelling of 89809443 in words is "eighty-nine million, eight hundred nine thousand, four hundred forty-three".