864279396 has 60 divisors (see below), whose sum is σ = 2266504240. Its totient is φ = 287187120.

The previous prime is 864279389. The next prime is 864279397. The reversal of 864279396 is 693972468.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (864279397) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103215 + ... + 111273.

Almost surely, 2^864279396 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 864279396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133252120).

864279396 is an abundant number, since it is smaller than the sum of its proper divisors (1402224844).

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

864279396 is a wasteful number, since it uses less digits than its factorization.

864279396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406 (or 8395 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 864279396 is about 29398.6291517139. The cubic root of 864279396 is about 952.5432852795.

The spelling of 864279396 in words is "eight hundred sixty-four million, two hundred seventy-nine thousand, three hundred ninety-six".