90387271459 has 2 divisors, whose sum is σ = 90387271460. Its totient is φ = 90387271458.

The previous prime is 90387271439. The next prime is 90387271511. The reversal of 90387271459 is 95417278309.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90387271459 - 2²¹ = 90385174307 is a prime.

It is not a weakly prime, because it can be changed into another prime (90387271439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45193635729 + 45193635730.

It is an arithmetic number, because the mean of its divisors is an integer number (45193635730).

Almost surely, 2^90387271459 is an apocalyptic number.

90387271459 is a deficient number, since it is larger than the sum of its proper divisors (1).

90387271459 is an equidigital number, since it uses as much as digits as its factorization.

90387271459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 90387271459 in words is "ninety billion, three hundred eighty-seven million, two hundred seventy-one thousand, four hundred fifty-nine".