854779047 has 4 divisors (see below), whose sum is σ = 1139705400. Its totient is φ = 569852696.

The previous prime is 854779043. The next prime is 854779067. The reversal of 854779047 is 740977458.

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 854779047 - 2² = 854779043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854779043) 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, 142463172 + ... + 142463177.

It is an arithmetic number, because the mean of its divisors is an integer number (284926350).

Almost surely, 2^854779047 is an apocalyptic number.

854779047 is a deficient number, since it is larger than the sum of its proper divisors (284926353).

854779047 is a wasteful number, since it uses less digits than its factorization.

854779047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284926352.

The product of its (nonzero) digits is 1975680, while the sum is 51.

The square root of 854779047 is about 29236.6045737189. The cubic root of 854779047 is about 949.0402299473.

The spelling of 854779047 in words is "eight hundred fifty-four million, seven hundred seventy-nine thousand, forty-seven".