854165947 has 4 divisors (see below), whose sum is σ = 855417240. Its totient is φ = 852914656.

The previous prime is 854165941. The next prime is 854165959. The reversal of 854165947 is 749561458.

It is a happy number.

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 854165947 - 2¹¹ = 854163899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854165947.

It is not an unprimeable number, because it can be changed into a prime (854165941) 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, 624622 + ... + 625987.

It is an arithmetic number, because the mean of its divisors is an integer number (213854310).

Almost surely, 2^854165947 is an apocalyptic number.

854165947 is a deficient number, since it is larger than the sum of its proper divisors (1251293).

854165947 is a wasteful number, since it uses less digits than its factorization.

854165947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251292.

The product of its digits is 1209600, while the sum is 49.

The square root of 854165947 is about 29226.1175492059. The cubic root of 854165947 is about 948.8132723739.

The spelling of 854165947 in words is "eight hundred fifty-four million, one hundred sixty-five thousand, nine hundred forty-seven".