863947045 has 32 divisors (see below), whose sum is σ = 1169344512. Its totient is φ = 607994112.

The previous prime is 863947027. The next prime is 863947061. The reversal of 863947045 is 540749368.

It is a cyclic number.

It is not a de Polignac number, because 863947045 - 2¹⁵ = 863914277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 863946986 and 863947004.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 473004 + ... + 474826.

It is an arithmetic number, because the mean of its divisors is an integer number (36542016).

Almost surely, 2^863947045 is an apocalyptic number.

It is an amenable number.

863947045 is a deficient number, since it is larger than the sum of its proper divisors (305397467).

863947045 is a wasteful number, since it uses less digits than its factorization.

863947045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 863947045 is about 29392.9761167528. The cubic root of 863947045 is about 952.4211722596.

It can be divided in two parts, 86394 and 7045, that added together give a palindrome (93439).

The spelling of 863947045 in words is "eight hundred sixty-three million, nine hundred forty-seven thousand, forty-five".