90927871 has 2 divisors, whose sum is σ = 90927872. Its totient is φ = 90927870.

The previous prime is 90927869. The next prime is 90927877. The reversal of 90927871 is 17872909.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90927871 - 2¹ = 90927869 is a prime.

Together with 90927869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90927877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45463935 + 45463936.

It is an arithmetic number, because the mean of its divisors is an integer number (45463936).

Almost surely, 2^90927871 is an apocalyptic number.

90927871 is a deficient number, since it is larger than the sum of its proper divisors (1).

90927871 is an equidigital number, since it uses as much as digits as its factorization.

90927871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 90927871 is about 9535.6106778748. The cubic root of 90927871 is about 449.6752735480.

The spelling of 90927871 in words is "ninety million, nine hundred twenty-seven thousand, eight hundred seventy-one".