947975385 has 16 divisors (see below), whose sum is σ = 1733440896. Its totient is φ = 433360128.

The previous prime is 947975363. The next prime is 947975387. The reversal of 947975385 is 583579749.

It is not a de Polignac number, because 947975385 - 2⁶ = 947975321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (947975387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4514064 + ... + 4514273.

It is an arithmetic number, because the mean of its divisors is an integer number (108340056).

Almost surely, 2^947975385 is an apocalyptic number.

It is an amenable number.

947975385 is a deficient number, since it is larger than the sum of its proper divisors (785465511).

947975385 is a wasteful number, since it uses less digits than its factorization.

947975385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028352.

The product of its digits is 9525600, while the sum is 57.

The square root of 947975385 is about 30789.2089050693. The cubic root of 947975385 is about 982.3487274305.

The spelling of 947975385 in words is "nine hundred forty-seven million, nine hundred seventy-five thousand, three hundred eighty-five".