90840059 has 2 divisors, whose sum is σ = 90840060. Its totient is φ = 90840058.

The previous prime is 90840031. The next prime is 90840067. The reversal of 90840059 is 95004809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90840059 - 2¹² = 90835963 is a prime.

It is not a weakly prime, because it can be changed into another prime (90840019) 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, 45420029 + 45420030.

It is an arithmetic number, because the mean of its divisors is an integer number (45420030).

Almost surely, 2^90840059 is an apocalyptic number.

90840059 is a deficient number, since it is larger than the sum of its proper divisors (1).

90840059 is an equidigital number, since it uses as much as digits as its factorization.

90840059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 90840059 is about 9531.0051411171. The cubic root of 90840059 is about 449.5304715830.

The spelling of 90840059 in words is "ninety million, eight hundred forty thousand, fifty-nine".