283404421 has 2 divisors, whose sum is σ = 283404422. Its totient is φ = 283404420.

The previous prime is 283404419. The next prime is 283404431. The reversal of 283404421 is 124404382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241336225 + 42068196 = 15535^2 + 6486^2 .

It is a cyclic number.

It is not a de Polignac number, because 283404421 - 2¹ = 283404419 is a prime.

Together with 283404419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 283404421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283404431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141702210 + 141702211.

It is an arithmetic number, because the mean of its divisors is an integer number (141702211).

Almost surely, 2^283404421 is an apocalyptic number.

It is an amenable number.

283404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

283404421 is an equidigital number, since it uses as much as digits as its factorization.

283404421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 283404421 is about 16834.6197165246. The cubic root of 283404421 is about 656.8540372778.

It can be divided in two parts, 28340 and 4421, that added together give a square (32761 = 181²).

The spelling of 283404421 in words is "two hundred eighty-three million, four hundred four thousand, four hundred twenty-one".