864749472 has 48 divisors (see below), whose sum is σ = 2403499392. Its totient is φ = 271293440.

The previous prime is 864749461. The next prime is 864749513. The reversal of 864749472 is 274947468.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263304 + ... + 266567.

It is an arithmetic number, because the mean of its divisors is an integer number (50072904).

Almost surely, 2^864749472 is an apocalyptic number.

It is an amenable number.

864749472 is an abundant number, since it is smaller than the sum of its proper divisors (1538749920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864749472 is a wasteful number, since it uses less digits than its factorization.

864749472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529901 (or 529893 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The square root of 864749472 is about 29406.6229274971. The cubic root of 864749472 is about 952.7159480336.

The spelling of 864749472 in words is "eight hundred sixty-four million, seven hundred forty-nine thousand, four hundred seventy-two".