947967871 has 4 divisors (see below), whose sum is σ = 952219072. Its totient is φ = 943716672.

The previous prime is 947967841. The next prime is 947967899. The reversal of 947967871 is 178769749.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178769749 = 431 ⋅414779.

It is a cyclic number.

It is not a de Polignac number, because 947967871 - 2⁹ = 947967359 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 (947967841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125266 + ... + 2125711.

It is an arithmetic number, because the mean of its divisors is an integer number (238054768).

Almost surely, 2^947967871 is an apocalyptic number.

947967871 is a deficient number, since it is larger than the sum of its proper divisors (4251201).

947967871 is a wasteful number, since it uses less digits than its factorization.

947967871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251200.

The product of its digits is 5334336, while the sum is 58.

The square root of 947967871 is about 30789.0868815559. The cubic root of 947967871 is about 982.3461319384.

It can be divided in two parts, 9479678 and 71, that added together give a palindrome (9479749).

The spelling of 947967871 in words is "nine hundred forty-seven million, nine hundred sixty-seven thousand, eight hundred seventy-one".