280104401 has 2 divisors, whose sum is σ = 280104402. Its totient is φ = 280104400.

The previous prime is 280104379. The next prime is 280104413. The reversal of 280104401 is 104401082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203804176 + 76300225 = 14276^2 + 8735^2 .

It is a cyclic number.

It is not a de Polignac number, because 280104401 - 2²² = 275910097 is a prime.

It is not a weakly prime, because it can be changed into another prime (280104481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140052200 + 140052201.

It is an arithmetic number, because the mean of its divisors is an integer number (140052201).

Almost surely, 2^280104401 is an apocalyptic number.

It is an amenable number.

280104401 is a deficient number, since it is larger than the sum of its proper divisors (1).

280104401 is an equidigital number, since it uses as much as digits as its factorization.

280104401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 280104401 is about 16736.3198164949. The cubic root of 280104401 is about 654.2945620754.

Adding to 280104401 its reverse (104401082), we get a palindrome (384505483).

The spelling of 280104401 in words is "two hundred eighty million, one hundred four thousand, four hundred one".