90027445 has 8 divisors (see below), whose sum is σ = 108177336. Its totient is φ = 71925696.

The previous prime is 90027433. The next prime is 90027449. The reversal of 90027445 is 54472009.

It can be written as a sum of positive squares in 4 ways, for example, as 5424241 + 84603204 = 2329^2 + 9198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90027445 - 2¹⁵ = 89994677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90027449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7782 + ... + 15511.

It is an arithmetic number, because the mean of its divisors is an integer number (13522167).

Almost surely, 2^90027445 is an apocalyptic number.

It is an amenable number.

90027445 is a deficient number, since it is larger than the sum of its proper divisors (18149891).

90027445 is a wasteful number, since it uses less digits than its factorization.

90027445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24071.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 90027445 is about 9488.2793487544. The cubic root of 90027445 is about 448.1860226755.

The spelling of 90027445 in words is "ninety million, twenty-seven thousand, four hundred forty-five".