4287469421 has 2 divisors, whose sum is σ = 4287469422. Its totient is φ = 4287469420.

The previous prime is 4287469393. The next prime is 4287469423. The reversal of 4287469421 is 1249647824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3817880521 + 469588900 = 61789^2 + 21670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4287469421 is a prime.

It is a Sophie Germain prime.

Together with 4287469423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4287469423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2143734710 + 2143734711.

It is an arithmetic number, because the mean of its divisors is an integer number (2143734711).

Almost surely, 2^4287469421 is an apocalyptic number.

It is an amenable number.

4287469421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4287469421 is an equidigital number, since it uses as much as digits as its factorization.

4287469421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 4287469421 is about 65478.7707657986. The cubic root of 4287469421 is about 1624.5522295745.

The spelling of 4287469421 in words is "four billion, two hundred eighty-seven million, four hundred sixty-nine thousand, four hundred twenty-one".