90191027 has 8 divisors (see below), whose sum is σ = 94373664. Its totient is φ = 86030208.

The previous prime is 90190993. The next prime is 90191029. The reversal of 90191027 is 72019109.

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 90191027 - 2¹² = 90186931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90191029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323 + ... + 13835.

It is an arithmetic number, because the mean of its divisors is an integer number (11796708).

Almost surely, 2^90191027 is an apocalyptic number.

90191027 is a deficient number, since it is larger than the sum of its proper divisors (4182637).

90191027 is a wasteful number, since it uses less digits than its factorization.

90191027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 90191027 is about 9496.8956506850. The cubic root of 90191027 is about 448.4573133010.

It can be divided in two parts, 9019102 and 7, that added together give a palindrome (9019109).

The spelling of 90191027 in words is "ninety million, one hundred ninety-one thousand, twenty-seven".