947307440 has 40 divisors (see below), whose sum is σ = 2298254688. Its totient is φ = 362447360.

The previous prime is 947307421. The next prime is 947307443. The reversal of 947307440 is 44703749.

It is a happy number.

947307440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 947307394 and 947307403.

It is not an unprimeable number, because it can be changed into a prime (947307443) 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, 255581 + ... + 259260.

Almost surely, 2^947307440 is an apocalyptic number.

It is an amenable number.

947307440 is an abundant number, since it is smaller than the sum of its proper divisors (1350947248).

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

947307440 is a wasteful number, since it uses less digits than its factorization.

947307440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514877 (or 514871 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 947307440 is about 30778.3599303147. The cubic root of 947307440 is about 982.1179517160.

The spelling of 947307440 in words is "nine hundred forty-seven million, three hundred seven thousand, four hundred forty".