8000436440 has 16 divisors (see below), whose sum is σ = 18000982080. Its totient is φ = 3200174560.

The previous prime is 8000436439. The next prime is 8000436463. The reversal of 8000436440 is 446340008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100005416 + ... + 100005495.

It is an arithmetic number, because the mean of its divisors is an integer number (1125061380).

Almost surely, 2^8000436440 is an apocalyptic number.

It is an amenable number.

8000436440 is an abundant number, since it is smaller than the sum of its proper divisors (10000545640).

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

8000436440 is a wasteful number, since it uses less digits than its factorization.

8000436440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200010922 (or 200010918 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 8000436440 is about 89445.1588404873. The cubic root of 8000436440 is about 2000.0363693386.

Adding to 8000436440 its reverse (446340008), we get a palindrome (8446776448).

The spelling of 8000436440 in words is "eight billion, four hundred thirty-six thousand, four hundred forty".