90520084393 has 2 divisors, whose sum is σ = 90520084394. Its totient is φ = 90520084392.

The previous prime is 90520084367. The next prime is 90520084423. The reversal of 90520084393 is 39348002509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54722309184 + 35797775209 = 233928^2 + 189203^2 .

It is a cyclic number.

It is not a de Polignac number, because 90520084393 - 2⁹ = 90520083881 is a prime.

It is not a weakly prime, because it can be changed into another prime (90520084493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45260042196 + 45260042197.

It is an arithmetic number, because the mean of its divisors is an integer number (45260042197).

Almost surely, 2^90520084393 is an apocalyptic number.

It is an amenable number.

90520084393 is a deficient number, since it is larger than the sum of its proper divisors (1).

90520084393 is an equidigital number, since it uses as much as digits as its factorization.

90520084393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 90520084393 in words is "ninety billion, five hundred twenty million, eighty-four thousand, three hundred ninety-three".