947145047 has 8 divisors (see below), whose sum is σ = 975351696. Its totient is φ = 919219392.

The previous prime is 947145013. The next prime is 947145053. The reversal of 947145047 is 740541749.

947145047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 947145047 - 2¹⁸ = 946882903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 947144995 and 947145013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947145007) 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, 63398 + ... + 76899.

It is an arithmetic number, because the mean of its divisors is an integer number (121918962).

Almost surely, 2^947145047 is an apocalyptic number.

947145047 is a deficient number, since it is larger than the sum of its proper divisors (28206649).

947145047 is a wasteful number, since it uses less digits than its factorization.

947145047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140497.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 947145047 is about 30775.7217137145. The cubic root of 947145047 is about 982.0618283682.

The spelling of 947145047 in words is "nine hundred forty-seven million, one hundred forty-five thousand, forty-seven".