90027845 has 8 divisors (see below), whose sum is σ = 110953464. Its totient is φ = 70075584.

The previous prime is 90027829. The next prime is 90027893. The reversal of 90027845 is 54872009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21585316 + 68442529 = 4646^2 + 8273^2 .

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 90027845 - 2⁴ = 90027829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243134 + ... + 243503.

It is an arithmetic number, because the mean of its divisors is an integer number (13869183).

Almost surely, 2^90027845 is an apocalyptic number.

It is an amenable number.

90027845 is a deficient number, since it is larger than the sum of its proper divisors (20925619).

90027845 is a wasteful number, since it uses less digits than its factorization.

90027845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486679.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 90027845 is about 9488.3004273684. The cubic root of 90027845 is about 448.1866864514.

The spelling of 90027845 in words is "ninety million, twenty-seven thousand, eight hundred forty-five".