947975909 has 8 divisors (see below), whose sum is σ = 951807168. Its totient is φ = 944153280.

The previous prime is 947975887. The next prime is 947975921. The reversal of 947975909 is 909579749.

947975909 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 947975909 - 2²⁴ = 931198693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947975209) 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, 293069 + ... + 296285.

It is an arithmetic number, because the mean of its divisors is an integer number (118975896).

Almost surely, 2^947975909 is an apocalyptic number.

It is an amenable number.

947975909 is a deficient number, since it is larger than the sum of its proper divisors (3831259).

947975909 is a wasteful number, since it uses less digits than its factorization.

947975909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315.

The product of its (nonzero) digits is 6429780, while the sum is 59.

The square root of 947975909 is about 30789.2174145430. The cubic root of 947975909 is about 982.3489084305.

The spelling of 947975909 in words is "nine hundred forty-seven million, nine hundred seventy-five thousand, nine hundred nine".