947922817 has 8 divisors (see below), whose sum is σ = 961466240. Its totient is φ = 934418160.

The previous prime is 947922803. The next prime is 947922847. The reversal of 947922817 is 718229749.

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 947922817 - 2¹⁵ = 947890049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947922847) 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, 41467 + ... + 60127.

It is an arithmetic number, because the mean of its divisors is an integer number (120183280).

Almost surely, 2^947922817 is an apocalyptic number.

It is an amenable number.

947922817 is a deficient number, since it is larger than the sum of its proper divisors (13543423).

947922817 is a wasteful number, since it uses less digits than its factorization.

947922817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19383.

The product of its digits is 508032, while the sum is 49.

The square root of 947922817 is about 30788.3552175169. The cubic root of 947922817 is about 982.3305690608.

The spelling of 947922817 in words is "nine hundred forty-seven million, nine hundred twenty-two thousand, eight hundred seventeen".