860818249 has 4 divisors (see below), whose sum is σ = 860878980. Its totient is φ = 860757520.

The previous prime is 860818229. The next prime is 860818291. The reversal of 860818249 is 942818068.

860818249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 362635849 + 498182400 = 19043^2 + 22320^2 .

It is a cyclic number.

It is not a de Polignac number, because 860818249 - 2¹³ = 860810057 is a prime.

It is a super-2 number, since 2×860818249² = 1482016115622852002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 860818199 and 860818208.

It is not an unprimeable number, because it can be changed into a prime (860818229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3447 + ... + 41635.

It is an arithmetic number, because the mean of its divisors is an integer number (215219745).

Almost surely, 2^860818249 is an apocalyptic number.

It is an amenable number.

860818249 is a deficient number, since it is larger than the sum of its proper divisors (60731).

860818249 is a wasteful number, since it uses less digits than its factorization.

860818249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60730.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 860818249 is about 29339.7043100301. The cubic root of 860818249 is about 951.2700461136.

The spelling of 860818249 in words is "eight hundred sixty million, eight hundred eighteen thousand, two hundred forty-nine".