290275823 has 2 divisors, whose sum is σ = 290275824. Its totient is φ = 290275822.

The previous prime is 290275789. The next prime is 290275831. The reversal of 290275823 is 328572092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290275823 - 2⁸ = 290275567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290274823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145137911 + 145137912.

It is an arithmetic number, because the mean of its divisors is an integer number (145137912).

Almost surely, 2^290275823 is an apocalyptic number.

290275823 is a deficient number, since it is larger than the sum of its proper divisors (1).

290275823 is an equidigital number, since it uses as much as digits as its factorization.

290275823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 290275823 is about 17037.4828833370. The cubic root of 290275823 is about 662.1203790726.

The spelling of 290275823 in words is "two hundred ninety million, two hundred seventy-five thousand, eight hundred twenty-three".