90494879983 has 2 divisors, whose sum is σ = 90494879984. Its totient is φ = 90494879982.

The previous prime is 90494879971. The next prime is 90494880001. The reversal of 90494879983 is 38997849409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90494879983 - 2³³ = 81904945391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90494879933) 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, 45247439991 + 45247439992.

It is an arithmetic number, because the mean of its divisors is an integer number (45247439992).

Almost surely, 2^90494879983 is an apocalyptic number.

90494879983 is a deficient number, since it is larger than the sum of its proper divisors (1).

90494879983 is an equidigital number, since it uses as much as digits as its factorization.

90494879983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 90494879983 in words is "ninety billion, four hundred ninety-four million, eight hundred seventy-nine thousand, nine hundred eighty-three".