423867287 has 2 divisors, whose sum is σ = 423867288. Its totient is φ = 423867286.

The previous prime is 423867271. The next prime is 423867289. The reversal of 423867287 is 782768324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423867287 - 2⁴ = 423867271 is a prime.

Together with 423867289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423867289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211933643 + 211933644.

It is an arithmetic number, because the mean of its divisors is an integer number (211933644).

Almost surely, 2^423867287 is an apocalyptic number.

423867287 is a deficient number, since it is larger than the sum of its proper divisors (1).

423867287 is an equidigital number, since it uses as much as digits as its factorization.

423867287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 47.

The square root of 423867287 is about 20588.0374732513. The cubic root of 423867287 is about 751.1787609116.

The spelling of 423867287 in words is "four hundred twenty-three million, eight hundred sixty-seven thousand, two hundred eighty-seven".