280798459 has 4 divisors (see below), whose sum is σ = 282268800. Its totient is φ = 279328120.

The previous prime is 280798429. The next prime is 280798517. The reversal of 280798459 is 954897082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954897082 = 2 ⋅477448541.

It is a cyclic number.

It is not a de Polignac number, because 280798459 - 2¹⁵ = 280765691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280798409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734884 + ... + 735265.

It is an arithmetic number, because the mean of its divisors is an integer number (70567200).

Almost surely, 2^280798459 is an apocalyptic number.

280798459 is a deficient number, since it is larger than the sum of its proper divisors (1470341).

280798459 is a wasteful number, since it uses less digits than its factorization.

280798459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470340.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 280798459 is about 16757.0420719171. The cubic root of 280798459 is about 654.8345319453.

The spelling of 280798459 in words is "two hundred eighty million, seven hundred ninety-eight thousand, four hundred fifty-nine".