847268421 has 16 divisors (see below), whose sum is σ = 1147036800. Its totient is φ = 556234560.

The previous prime is 847268419. The next prime is 847268447. The reversal of 847268421 is 124862748.

It is not a de Polignac number, because 847268421 - 2¹ = 847268419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847263421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48355 + ... + 63503.

It is an arithmetic number, because the mean of its divisors is an integer number (71689800).

Almost surely, 2^847268421 is an apocalyptic number.

It is an amenable number.

847268421 is a deficient number, since it is larger than the sum of its proper divisors (299768379).

847268421 is a wasteful number, since it uses less digits than its factorization.

847268421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15436.

The product of its digits is 172032, while the sum is 42.

The square root of 847268421 is about 29107.8755837660. The cubic root of 847268421 is about 946.2524274709.

The spelling of 847268421 in words is "eight hundred forty-seven million, two hundred sixty-eight thousand, four hundred twenty-one".