90456193 has 2 divisors, whose sum is σ = 90456194. Its totient is φ = 90456192.

The previous prime is 90456187. The next prime is 90456211. The reversal of 90456193 is 39165409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84419344 + 6036849 = 9188^2 + 2457^2 .

It is an emirp because it is prime and its reverse (39165409) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90456193 is a prime.

It is not a weakly prime, because it can be changed into another prime (90856193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45228096 + 45228097.

It is an arithmetic number, because the mean of its divisors is an integer number (45228097).

Almost surely, 2^90456193 is an apocalyptic number.

It is an amenable number.

90456193 is a deficient number, since it is larger than the sum of its proper divisors (1).

90456193 is an equidigital number, since it uses as much as digits as its factorization.

90456193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 90456193 is about 9510.8460717225. The cubic root of 90456193 is about 448.8963787182.

The spelling of 90456193 in words is "ninety million, four hundred fifty-six thousand, one hundred ninety-three".