947859420 has 96 divisors (see below), whose sum is σ = 2726535168. Its totient is φ = 245935872.

The previous prime is 947859413. The next prime is 947859427. The reversal of 947859420 is 24958749.

It is an interprime number because it is at equal distance from previous prime (947859413) and next prime (947859427).

It is a self number, because there is not a number n which added to its sum of digits gives 947859420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947859427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402687 + ... + 405033.

It is an arithmetic number, because the mean of its divisors is an integer number (28401408).

Almost surely, 2^947859420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947859420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363267584).

947859420 is an abundant number, since it is smaller than the sum of its proper divisors (1778675748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947859420 is a wasteful number, since it uses less digits than its factorization.

947859420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 947859420 is about 30787.3256389703. The cubic root of 947859420 is about 982.3086691767.

The spelling of 947859420 in words is "nine hundred forty-seven million, eight hundred fifty-nine thousand, four hundred twenty".