421918463 has 8 divisors (see below), whose sum is σ = 454465536. Its totient is φ = 390555000.

The previous prime is 421918439. The next prime is 421918487. The reversal of 421918463 is 364819124.

It is an interprime number because it is at equal distance from previous prime (421918439) and next prime (421918487).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421918463 - 2⁸ = 421918207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421918433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295163 + ... + 296588.

It is an arithmetic number, because the mean of its divisors is an integer number (56808192).

Almost surely, 2^421918463 is an apocalyptic number.

421918463 is a deficient number, since it is larger than the sum of its proper divisors (32547073).

421918463 is a wasteful number, since it uses less digits than its factorization.

421918463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591805.

The product of its digits is 41472, while the sum is 38.

The square root of 421918463 is about 20540.6539087732. The cubic root of 421918463 is about 750.0257549674.

The spelling of 421918463 in words is "four hundred twenty-one million, nine hundred eighteen thousand, four hundred sixty-three".