947978612 has 12 divisors (see below), whose sum is σ = 1895957280. Its totient is φ = 406276536.

The previous prime is 947978587. The next prime is 947978621. The reversal of 947978612 is 216879749.

947978612 is an admirable number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16928162 + ... + 16928217.

It is an arithmetic number, because the mean of its divisors is an integer number (157996440).

Almost surely, 2^947978612 is an apocalyptic number.

It is an amenable number.

947978612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947978612 is a wasteful number, since it uses less digits than its factorization.

947978612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33856390 (or 33856388 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 53.

The square root of 947978612 is about 30789.2613097489. The cubic root of 947978612 is about 982.3498420993.

The spelling of 947978612 in words is "nine hundred forty-seven million, nine hundred seventy-eight thousand, six hundred twelve".