90488509427 has 2 divisors, whose sum is σ = 90488509428. Its totient is φ = 90488509426.

The previous prime is 90488509369. The next prime is 90488509439. The reversal of 90488509427 is 72490588409.

It is a strong prime.

It is an emirp because it is prime and its reverse (72490588409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90488509427 - 2²² = 90484315123 is a prime.

It is not a weakly prime, because it can be changed into another prime (90488509477) 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, 45244254713 + 45244254714.

It is an arithmetic number, because the mean of its divisors is an integer number (45244254714).

Almost surely, 2^90488509427 is an apocalyptic number.

90488509427 is a deficient number, since it is larger than the sum of its proper divisors (1).

90488509427 is an equidigital number, since it uses as much as digits as its factorization.

90488509427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 90488509427 in words is "ninety billion, four hundred eighty-eight million, five hundred nine thousand, four hundred twenty-seven".