947964047 has 4 divisors (see below), whose sum is σ = 1003726656. Its totient is φ = 892201440.

The previous prime is 947964041. The next prime is 947964071. The reversal of 947964047 is 740469749.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 947964047 - 2⁶ = 947963983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 947963986 and 947964004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947964041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27881279 + ... + 27881312.

It is an arithmetic number, because the mean of its divisors is an integer number (250931664).

Almost surely, 2^947964047 is an apocalyptic number.

947964047 is a deficient number, since it is larger than the sum of its proper divisors (55762609).

947964047 is a wasteful number, since it uses less digits than its factorization.

947964047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55762608.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 947964047 is about 30789.0247815679. The cubic root of 947964047 is about 982.3448110439.

The spelling of 947964047 in words is "nine hundred forty-seven million, nine hundred sixty-four thousand, forty-seven".