947306988 has 30 divisors (see below), whose sum is σ = 2476448436. Its totient is φ = 315768888.

The previous prime is 947306951. The next prime is 947306989. The reversal of 947306988 is 889603749.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (947306989) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1461570 + ... + 1462217.

Almost surely, 2^947306988 is an apocalyptic number.

It is an amenable number.

947306988 is an abundant number, since it is smaller than the sum of its proper divisors (1529141448).

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

947306988 is a wasteful number, since it uses less digits than its factorization.

947306988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923803 (or 2923792 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 947306988 is about 30778.3525874924. The cubic root of 947306988 is about 982.1177955128.

The spelling of 947306988 in words is "nine hundred forty-seven million, three hundred six thousand, nine hundred eighty-eight".