864194904 has 96 divisors (see below), whose sum is σ = 2389608000. Its totient is φ = 282087936.

The previous prime is 864194873. The next prime is 864194927. The reversal of 864194904 is 409491468.

It is a self number, because there is not a number n which added to its sum of digits gives 864194904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778702 + ... + 779810.

It is an arithmetic number, because the mean of its divisors is an integer number (24891750).

Almost surely, 2^864194904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864194904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194804000).

864194904 is an abundant number, since it is smaller than the sum of its proper divisors (1525413096).

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

864194904 is a wasteful number, since it uses less digits than its factorization.

864194904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 864194904 is about 29397.1921108122. The cubic root of 864194904 is about 952.5122440404.

The spelling of 864194904 in words is "eight hundred sixty-four million, one hundred ninety-four thousand, nine hundred four".