90427871 has 2 divisors, whose sum is σ = 90427872. Its totient is φ = 90427870.

The previous prime is 90427867. The next prime is 90427877. The reversal of 90427871 is 17872409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90427871 - 2² = 90427867 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90427877) 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 as a sum of consecutive naturals, namely, 45213935 + 45213936.

It is an arithmetic number, because the mean of its divisors is an integer number (45213936).

Almost surely, 2^90427871 is an apocalyptic number.

90427871 is a deficient number, since it is larger than the sum of its proper divisors (1).

90427871 is an equidigital number, since it uses as much as digits as its factorization.

90427871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 90427871 is about 9509.3570234796. The cubic root of 90427871 is about 448.8495237344.

The spelling of 90427871 in words is "ninety million, four hundred twenty-seven thousand, eight hundred seventy-one".