860389481 has 6 divisors (see below), whose sum is σ = 1000861290. Its totient is φ = 737476656.

The previous prime is 860389463. The next prime is 860389489. The reversal of 860389481 is 184983068.

It can be written as a sum of positive squares in only one way, i.e., 807696400 + 52693081 = 28420^2 + 7259^2 .

It is a de Polignac number, because none of the positive numbers 2^k-860389481 is a prime.

It is a super-2 number, since 2×860389481² = 1480540118030898722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (860389489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8779436 + ... + 8779533.

It is an arithmetic number, because the mean of its divisors is an integer number (166810215).

Almost surely, 2^860389481 is an apocalyptic number.

It is an amenable number.

860389481 is a deficient number, since it is larger than the sum of its proper divisors (140471809).

860389481 is a wasteful number, since it uses less digits than its factorization.

860389481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558983 (or 17558976 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 860389481 is about 29332.3964414775. The cubic root of 860389481 is about 951.1120793983.

The spelling of 860389481 in words is "eight hundred sixty million, three hundred eighty-nine thousand, four hundred eighty-one".