280898447 has 2 divisors, whose sum is σ = 280898448. Its totient is φ = 280898446.

The previous prime is 280898419. The next prime is 280898459. The reversal of 280898447 is 744898082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280898447 - 2¹⁰ = 280897423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280898395 and 280898404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280898417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140449223 + 140449224.

It is an arithmetic number, because the mean of its divisors is an integer number (140449224).

Almost surely, 2^280898447 is an apocalyptic number.

280898447 is a deficient number, since it is larger than the sum of its proper divisors (1).

280898447 is an equidigital number, since it uses as much as digits as its factorization.

280898447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 280898447 is about 16760.0252684774. The cubic root of 280898447 is about 654.9122482135.

The spelling of 280898447 in words is "two hundred eighty million, eight hundred ninety-eight thousand, four hundred forty-seven".