870927947 has 4 divisors (see below), whose sum is σ = 916766280. Its totient is φ = 825089616.

The previous prime is 870927943. The next prime is 870927979. The reversal of 870927947 is 749729078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 870927947 - 2² = 870927943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870927943) 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, 22919138 + ... + 22919175.

It is an arithmetic number, because the mean of its divisors is an integer number (229191570).

Almost surely, 2^870927947 is an apocalyptic number.

870927947 is a deficient number, since it is larger than the sum of its proper divisors (45838333).

870927947 is a wasteful number, since it uses less digits than its factorization.

870927947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45838332.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 870927947 is about 29511.4883901168. The cubic root of 870927947 is about 954.9795586023.

The spelling of 870927947 in words is "eight hundred seventy million, nine hundred twenty-seven thousand, nine hundred forty-seven".