90802849 has 2 divisors, whose sum is σ = 90802850. Its totient is φ = 90802848.

The previous prime is 90802819. The next prime is 90802861. The reversal of 90802849 is 94820809.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 13010449 = 8820^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 90802849 - 2⁷ = 90802721 is a prime.

It is not a weakly prime, because it can be changed into another prime (90802819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45401424 + 45401425.

It is an arithmetic number, because the mean of its divisors is an integer number (45401425).

Almost surely, 2^90802849 is an apocalyptic number.

It is an amenable number.

90802849 is a deficient number, since it is larger than the sum of its proper divisors (1).

90802849 is an equidigital number, since it uses as much as digits as its factorization.

90802849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 90802849 is about 9529.0528910275. The cubic root of 90802849 is about 449.4690841530.

The spelling of 90802849 in words is "ninety million, eight hundred two thousand, eight hundred forty-nine".