90244027 has 4 divisors (see below), whose sum is σ = 93355920. Its totient is φ = 87132136.

The previous prime is 90244013. The next prime is 90244031. The reversal of 90244027 is 72044209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72044209 = 101 ⋅713309.

It is a cyclic number.

It is not a de Polignac number, because 90244027 - 2⁷ = 90243899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90243986 and 90244004.

It is not an unprimeable number, because it can be changed into a prime (90244087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555903 + ... + 1555960.

It is an arithmetic number, because the mean of its divisors is an integer number (23338980).

Almost surely, 2^90244027 is an apocalyptic number.

90244027 is a deficient number, since it is larger than the sum of its proper divisors (3111893).

90244027 is a wasteful number, since it uses less digits than its factorization.

90244027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111892.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 90244027 is about 9499.6856263773. The cubic root of 90244027 is about 448.5451401584.

The spelling of 90244027 in words is "ninety million, two hundred forty-four thousand, twenty-seven".