90443194867 has 2 divisors, whose sum is σ = 90443194868. Its totient is φ = 90443194866.

The previous prime is 90443194781. The next prime is 90443194873. The reversal of 90443194867 is 76849134409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90443194867 - 2¹⁵ = 90443162099 is a prime.

It is not a weakly prime, because it can be changed into another prime (90443194067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45221597433 + 45221597434.

It is an arithmetic number, because the mean of its divisors is an integer number (45221597434).

Almost surely, 2^90443194867 is an apocalyptic number.

90443194867 is a deficient number, since it is larger than the sum of its proper divisors (1).

90443194867 is an equidigital number, since it uses as much as digits as its factorization.

90443194867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 90443194867 in words is "ninety billion, four hundred forty-three million, one hundred ninety-four thousand, eight hundred sixty-seven".