8691439400 has 96 divisors (see below), whose sum is σ = 23177058240. Its totient is φ = 2969256960.

The previous prime is 8691439391. The next prime is 8691439411. The reversal of 8691439400 is 49341968.

It is a super-2 number, since 2×8691439400² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 385232 + ... + 407168.

It is an arithmetic number, because the mean of its divisors is an integer number (241427690).

Almost surely, 2^8691439400 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 8691439400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11588529120).

8691439400 is an abundant number, since it is smaller than the sum of its proper divisors (14485618840).

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

8691439400 is a wasteful number, since it uses less digits than its factorization.

8691439400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22243 (or 22234 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 8691439400 is about 93227.8896039163. The cubic root of 8691439400 is about 2056.0353096683.

The spelling of 8691439400 in words is "eight billion, six hundred ninety-one million, four hundred thirty-nine thousand, four hundred".