862728849 has 6 divisors (see below), whose sum is σ = 1246163906. Its totient is φ = 575152560.

The previous prime is 862728833. The next prime is 862728871. The reversal of 862728849 is 948827268.

862728849 is a `hidden beast` number, since 8 + 627 + 2 + 8 + 8 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 852231249 + 10497600 = 29193^2 + 3240^2 .

It is not a de Polignac number, because 862728849 - 2⁴ = 862728833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 862728795 and 862728804.

It is not an unprimeable number, because it can be changed into a prime (862728829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47929372 + ... + 47929389.

Almost surely, 2^862728849 is an apocalyptic number.

It is an amenable number.

862728849 is a deficient number, since it is larger than the sum of its proper divisors (383435057).

862728849 is a wasteful number, since it uses less digits than its factorization.

862728849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95858767 (or 95858764 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 862728849 is about 29372.2462368815. The cubic root of 862728849 is about 951.9733124742.

The spelling of 862728849 in words is "eight hundred sixty-two million, seven hundred twenty-eight thousand, eight hundred forty-nine".