90440722301 has 2 divisors, whose sum is σ = 90440722302. Its totient is φ = 90440722300.

The previous prime is 90440722297. The next prime is 90440722321. The reversal of 90440722301 is 10322704409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89939410201 + 501312100 = 299899^2 + 22390^2 .

It is a cyclic number.

It is not a de Polignac number, because 90440722301 - 2² = 90440722297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90440722321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45220361150 + 45220361151.

It is an arithmetic number, because the mean of its divisors is an integer number (45220361151).

Almost surely, 2^90440722301 is an apocalyptic number.

It is an amenable number.

90440722301 is a deficient number, since it is larger than the sum of its proper divisors (1).

90440722301 is an equidigital number, since it uses as much as digits as its factorization.

90440722301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 90440722301 in words is "ninety billion, four hundred forty million, seven hundred twenty-two thousand, three hundred one".