280500049 has 2 divisors, whose sum is σ = 280500050. Its totient is φ = 280500048.

The previous prime is 280500043. The next prime is 280500053. The reversal of 280500049 is 940005082.

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., 279959824 + 540225 = 16732^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 280500049 - 2²⁷ = 146282321 is a prime.

It is not a weakly prime, because it can be changed into another prime (280500043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140250024 + 140250025.

It is an arithmetic number, because the mean of its divisors is an integer number (140250025).

Almost surely, 2^280500049 is an apocalyptic number.

It is an amenable number.

280500049 is a deficient number, since it is larger than the sum of its proper divisors (1).

280500049 is an equidigital number, since it uses as much as digits as its factorization.

280500049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 280500049 is about 16748.1356872937. The cubic root of 280500049 is about 654.6024812472.

The spelling of 280500049 in words is "two hundred eighty million, five hundred thousand, forty-nine".