8089578440 has 32 divisors (see below), whose sum is σ = 18499943160. Its totient is φ = 3182784000.

The previous prime is 8089578407. The next prime is 8089578451. The reversal of 8089578440 is 448759808.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2203926916 + 5885651524 = 46946^2 + 76718^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655261 + ... + 1660140.

Almost surely, 2^8089578440 is an apocalyptic number.

It is an amenable number.

8089578440 is an abundant number, since it is smaller than the sum of its proper divisors (10410364720).

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

8089578440 is a wasteful number, since it uses less digits than its factorization.

8089578440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315473 (or 3315469 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The square root of 8089578440 is about 89942.0838095271. The cubic root of 8089578440 is about 2007.4371798974.

The spelling of 8089578440 in words is "eight billion, eighty-nine million, five hundred seventy-eight thousand, four hundred forty".