864140376 has 192 divisors, whose sum is σ = 2543385600. Its totient is φ = 243936000.

The previous prime is 864140369. The next prime is 864140377. The reversal of 864140376 is 673041468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864140377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2610531 + ... + 2610861.

It is an arithmetic number, because the mean of its divisors is an integer number (13246800).

Almost surely, 2^864140376 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 864140376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271692800).

864140376 is an abundant number, since it is smaller than the sum of its proper divisors (1679245224).

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

864140376 is a wasteful number, since it uses less digits than its factorization.

864140376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 864140376 is about 29396.2646606673. The cubic root of 864140376 is about 952.4922101029.

The spelling of 864140376 in words is "eight hundred sixty-four million, one hundred forty thousand, three hundred seventy-six".