90000027 has 12 divisors (see below), whose sum is σ = 140000224. Its totient is φ = 55384560.

The previous prime is 89999999. The next prime is 90000049. The reversal of 90000027 is 72000009.

It is not a de Polignac number, because 90000027 - 2²² = 85805723 is a prime.

90000027 is a modest number, since divided by 27 gives 9 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 89999964 and 90000009.

It is not an unprimeable number, because it can be changed into a prime (90008027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384499 + ... + 384732.

Almost surely, 2^90000027 is an apocalyptic number.

90000027 is a deficient number, since it is larger than the sum of its proper divisors (50000197).

90000027 is a wasteful number, since it uses less digits than its factorization.

90000027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769250 (or 769247 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 90000027 is about 9486.8344035300. The cubic root of 90000027 is about 448.1405194698.

Subtracting from 90000027 its sum of digits (18), we obtain a palindrome (90000009).

It can be divided in two parts, 9000002 and 7, that added together give a palindrome (9000009).

The spelling of 90000027 in words is "ninety million, twenty-seven", and thus it is an aban number and an uban number.