90280823 has 2 divisors, whose sum is σ = 90280824. Its totient is φ = 90280822.

The previous prime is 90280787. The next prime is 90280847. The reversal of 90280823 is 32808209.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90280823 - 2¹⁰ = 90279799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90280823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90280873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45140411 + 45140412.

It is an arithmetic number, because the mean of its divisors is an integer number (45140412).

Almost surely, 2^90280823 is an apocalyptic number.

90280823 is a deficient number, since it is larger than the sum of its proper divisors (1).

90280823 is an equidigital number, since it uses as much as digits as its factorization.

90280823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 90280823 is about 9501.6221246690. The cubic root of 90280823 is about 448.6060949748.

The spelling of 90280823 in words is "ninety million, two hundred eighty thousand, eight hundred twenty-three".