280223959 has 2 divisors, whose sum is σ = 280223960. Its totient is φ = 280223958.

The previous prime is 280223953. The next prime is 280223969. The reversal of 280223959 is 959322082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280223959 - 2⁷ = 280223831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280223953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140111979 + 140111980.

It is an arithmetic number, because the mean of its divisors is an integer number (140111980).

Almost surely, 2^280223959 is an apocalyptic number.

280223959 is a deficient number, since it is larger than the sum of its proper divisors (1).

280223959 is an equidigital number, since it uses as much as digits as its factorization.

280223959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 280223959 is about 16739.8912481533. The cubic root of 280223959 is about 654.3876404916.

It can be divided in two parts, 280223 and 959, that added together give a palindrome (281182).

The spelling of 280223959 in words is "two hundred eighty million, two hundred twenty-three thousand, nine hundred fifty-nine".