421894064 has 20 divisors (see below), whose sum is σ = 818202840. Its totient is φ = 210744960.

The previous prime is 421894061. The next prime is 421894079. The reversal of 421894064 is 460498124.

It is not an unprimeable number, because it can be changed into a prime (421894061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5372 + ... + 29540.

It is an arithmetic number, because the mean of its divisors is an integer number (40910142).

Almost surely, 2^421894064 is an apocalyptic number.

It is an amenable number.

421894064 is a deficient number, since it is larger than the sum of its proper divisors (396308776).

421894064 is a wasteful number, since it uses less digits than its factorization.

421894064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25268 (or 25262 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 421894064 is about 20540.0599804382. The cubic root of 421894064 is about 750.0112970150.

The spelling of 421894064 in words is "four hundred twenty-one million, eight hundred ninety-four thousand, sixty-four".