280411 has 2 divisors, whose sum is σ = 280412. Its totient is φ = 280410.

The previous prime is 280409. The next prime is 280451. The reversal of 280411 is 114082.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280411 - 2¹ = 280409 is a prime.

Together with 280409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (280451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140205 + 140206.

It is an arithmetic number, because the mean of its divisors is an integer number (140206).

2²⁸⁰⁴¹¹ is an apocalyptic number.

280411 is a deficient number, since it is larger than the sum of its proper divisors (1).

280411 is an equidigital number, since it uses as much as digits as its factorization.

280411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 280411 is about 529.5384782997. The cubic root of 280411 is about 65.4533202750.

Adding to 280411 its reverse (114082), we get a palindrome (394493).

The spelling of 280411 in words is "two hundred eighty thousand, four hundred eleven".