864009376 has 12 divisors (see below), whose sum is σ = 1701018522. Its totient is φ = 432004672.

The previous prime is 864009371. The next prime is 864009397. The reversal of 864009376 is 673900468.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 560552976 + 303456400 = 23676^2 + 17420^2 .

It is not an unprimeable number, because it can be changed into a prime (864009371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13500115 + ... + 13500178.

Almost surely, 2^864009376 is an apocalyptic number.

It is an amenable number.

864009376 is a deficient number, since it is larger than the sum of its proper divisors (837009146).

864009376 is a wasteful number, since it uses less digits than its factorization.

864009376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27000303 (or 27000295 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 864009376 is about 29394.0364019643. The cubic root of 864009376 is about 952.4440764167. Note that the first 3 decimals are identical.

The spelling of 864009376 in words is "eight hundred sixty-four million, nine thousand, three hundred seventy-six".