864489916 has 12 divisors (see below), whose sum is σ = 1601849088. Its totient is φ = 406818752.

The previous prime is 864489907. The next prime is 864489917. The reversal of 864489916 is 619984468.

864489916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864489917) 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, 6356476 + ... + 6356611.

It is an arithmetic number, because the mean of its divisors is an integer number (133487424).

Almost surely, 2^864489916 is an apocalyptic number.

It is an amenable number.

864489916 is a deficient number, since it is larger than the sum of its proper divisors (737359172).

864489916 is a wasteful number, since it uses less digits than its factorization.

864489916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713108 (or 12713106 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 864489916 is about 29402.2093727665. The cubic root of 864489916 is about 952.6206187336.

The spelling of 864489916 in words is "eight hundred sixty-four million, four hundred eighty-nine thousand, nine hundred sixteen".