856715484 has 24 divisors (see below), whose sum is σ = 1999988368. Its totient is φ = 285431040.

The previous prime is 856715471. The next prime is 856715591. The reversal of 856715484 is 484517658.

It is a super-2 number, since 2×856715484² = 1467922841050708512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9414 + ... + 42450.

Almost surely, 2^856715484 is an apocalyptic number.

It is an amenable number.

856715484 is an abundant number, since it is smaller than the sum of its proper divisors (1143272884).

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

856715484 is a wasteful number, since it uses less digits than its factorization.

856715484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35205 (or 35203 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 856715484 is about 29269.7024925092. The cubic root of 856715484 is about 949.7563489647.

The spelling of 856715484 in words is "eight hundred fifty-six million, seven hundred fifteen thousand, four hundred eighty-four".