422647851 has 8 divisors (see below), whose sum is σ = 566644624. Its totient is φ = 280208160.

The previous prime is 422647807. The next prime is 422647873. The reversal of 422647851 is 158746224.

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

It is not a de Polignac number, because 422647851 - 2²⁶ = 355538987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422647891) 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, 388636 + ... + 389721.

It is an arithmetic number, because the mean of its divisors is an integer number (70830578).

Almost surely, 2^422647851 is an apocalyptic number.

422647851 is a deficient number, since it is larger than the sum of its proper divisors (143996773).

422647851 is a wasteful number, since it uses less digits than its factorization.

422647851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778541.

The product of its digits is 107520, while the sum is 39.

The square root of 422647851 is about 20558.4009835396. The cubic root of 422647851 is about 750.4577063941.

The spelling of 422647851 in words is "four hundred twenty-two million, six hundred forty-seven thousand, eight hundred fifty-one".