421344463 has 2 divisors, whose sum is σ = 421344464. Its totient is φ = 421344462.

The previous prime is 421344457. The next prime is 421344479. The reversal of 421344463 is 364443124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421344463 - 2¹³ = 421336271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421344163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210672231 + 210672232.

It is an arithmetic number, because the mean of its divisors is an integer number (210672232).

Almost surely, 2^421344463 is an apocalyptic number.

421344463 is a deficient number, since it is larger than the sum of its proper divisors (1).

421344463 is an equidigital number, since it uses as much as digits as its factorization.

421344463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 31.

The square root of 421344463 is about 20526.6768620739. The cubic root of 421344463 is about 749.6854758215.

Adding to 421344463 its reverse (364443124), we get a palindrome (785787587).

The spelling of 421344463 in words is "four hundred twenty-one million, three hundred forty-four thousand, four hundred sixty-three".