421977385 has 8 divisors (see below), whose sum is σ = 506488320. Its totient is φ = 337504944.

The previous prime is 421977379. The next prime is 421977397. The reversal of 421977385 is 583779124.

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 421977385 - 2³ = 421977377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27576 + ... + 40054.

It is an arithmetic number, because the mean of its divisors is an integer number (63311040).

Almost surely, 2^421977385 is an apocalyptic number.

It is an amenable number.

421977385 is a deficient number, since it is larger than the sum of its proper divisors (84510935).

421977385 is a wasteful number, since it uses less digits than its factorization.

421977385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19247.

The product of its digits is 423360, while the sum is 46.

The square root of 421977385 is about 20542.0881363118. The cubic root of 421977385 is about 750.0606676850.

The spelling of 421977385 in words is "four hundred twenty-one million, nine hundred seventy-seven thousand, three hundred eighty-five".