90309422179 has 2 divisors, whose sum is σ = 90309422180. Its totient is φ = 90309422178.

The previous prime is 90309422111. The next prime is 90309422183. The reversal of 90309422179 is 97122490309.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90309422179 is a prime.

It is not a weakly prime, because it can be changed into another prime (90309428179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45154711089 + 45154711090.

It is an arithmetic number, because the mean of its divisors is an integer number (45154711090).

Almost surely, 2^90309422179 is an apocalyptic number.

90309422179 is a deficient number, since it is larger than the sum of its proper divisors (1).

90309422179 is an equidigital number, since it uses as much as digits as its factorization.

90309422179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 90309422179 in words is "ninety billion, three hundred nine million, four hundred twenty-two thousand, one hundred seventy-nine".