90248773 has 2 divisors, whose sum is σ = 90248774. Its totient is φ = 90248772.

The previous prime is 90248761. The next prime is 90248777. The reversal of 90248773 is 37784209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65318724 + 24930049 = 8082^2 + 4993^2 .

It is an emirp because it is prime and its reverse (37784209) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90248773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90248777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45124386 + 45124387.

It is an arithmetic number, because the mean of its divisors is an integer number (45124387).

Almost surely, 2^90248773 is an apocalyptic number.

It is an amenable number.

90248773 is a deficient number, since it is larger than the sum of its proper divisors (1).

90248773 is an equidigital number, since it uses as much as digits as its factorization.

90248773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 90248773 is about 9499.9354208331. The cubic root of 90248773 is about 448.5530031272.

The spelling of 90248773 in words is "ninety million, two hundred forty-eight thousand, seven hundred seventy-three".