280874879 has 2 divisors, whose sum is σ = 280874880. Its totient is φ = 280874878.

The previous prime is 280874861. The next prime is 280874897. The reversal of 280874879 is 978478082.

It is a happy number.

Together with next prime (280874897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (280874861) and next prime (280874897).

It is a cyclic number.

It is not a de Polignac number, because 280874879 - 2⁸ = 280874623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280874879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280874809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140437439 + 140437440.

It is an arithmetic number, because the mean of its divisors is an integer number (140437440).

Almost surely, 2^280874879 is an apocalyptic number.

280874879 is a deficient number, since it is larger than the sum of its proper divisors (1).

280874879 is an equidigital number, since it uses as much as digits as its factorization.

280874879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 280874879 is about 16759.3221521636. The cubic root of 280874879 is about 654.8939315066.

The spelling of 280874879 in words is "two hundred eighty million, eight hundred seventy-four thousand, eight hundred seventy-nine".