90843089 has 4 divisors (see below), whose sum is σ = 92199024. Its totient is φ = 89487156.

The previous prime is 90843083. The next prime is 90843131. The reversal of 90843089 is 98034809.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90843089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90843083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677867 + ... + 678000.

It is an arithmetic number, because the mean of its divisors is an integer number (23049756).

Almost surely, 2^90843089 is an apocalyptic number.

It is an amenable number.

90843089 is a deficient number, since it is larger than the sum of its proper divisors (1355935).

90843089 is a wasteful number, since it uses less digits than its factorization.

90843089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355934.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 90843089 is about 9531.1640946948. The cubic root of 90843089 is about 449.5354696062.

The spelling of 90843089 in words is "ninety million, eight hundred forty-three thousand, eighty-nine".