421246847 has 8 divisors (see below), whose sum is σ = 486388896. Its totient is φ = 357345792.

The previous prime is 421246841. The next prime is 421246849. The reversal of 421246847 is 748642124.

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 421246847 - 2⁴ = 421246831 is a prime.

It is a super-2 number, since 2×421246847² = 354897812214882818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421246847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421246841) 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, 309518 + ... + 310875.

It is an arithmetic number, because the mean of its divisors is an integer number (60798612).

Almost surely, 2^421246847 is an apocalyptic number.

421246847 is a deficient number, since it is larger than the sum of its proper divisors (65142049).

421246847 is an equidigital number, since it uses as much as digits as its factorization.

421246847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620497.

The product of its digits is 86016, while the sum is 38.

The square root of 421246847 is about 20524.2989405241. The cubic root of 421246847 is about 749.6275762832.

The spelling of 421246847 in words is "four hundred twenty-one million, two hundred forty-six thousand, eight hundred forty-seven".