860289145 has 4 divisors (see below), whose sum is σ = 1032346980. Its totient is φ = 688231312.

The previous prime is 860289127. The next prime is 860289151. The reversal of 860289145 is 541982068.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 447914896 + 412374249 = 21164^2 + 20307^2 .

It is a cyclic number.

It is not a de Polignac number, because 860289145 - 2²⁷ = 726071417 is a prime.

It is an unprimeable number.

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, 86028910 + ... + 86028919.

It is an arithmetic number, because the mean of its divisors is an integer number (258086745).

Almost surely, 2^860289145 is an apocalyptic number.

It is an amenable number.

860289145 is a deficient number, since it is larger than the sum of its proper divisors (172057835).

860289145 is a wasteful number, since it uses less digits than its factorization.

860289145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172057834.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 860289145 is about 29330.6860642570. The cubic root of 860289145 is about 951.0751060300.

The spelling of 860289145 in words is "eight hundred sixty million, two hundred eighty-nine thousand, one hundred forty-five".