8365149440 has 72 divisors (see below), whose sum is σ = 20578808040. Its totient is φ = 3255607296.

The previous prime is 8365149407. The next prime is 8365149449. The reversal of 8365149440 is 449415638.

It can be written as a sum of positive squares in 4 ways, for example, as 2784461824 + 5580687616 = 52768^2 + 74704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8365149391 and 8365149400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8365149449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40955 + ... + 135674.

Almost surely, 2^8365149440 is an apocalyptic number.

8365149440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8365149440 is an abundant number, since it is smaller than the sum of its proper divisors (12213658600).

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

8365149440 is a wasteful number, since it uses less digits than its factorization.

8365149440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176687 (or 176673 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 8365149440 is about 91461.1908953738. The cubic root of 8365149440 is about 2029.9775483454.

The spelling of 8365149440 in words is "eight billion, three hundred sixty-five million, one hundred forty-nine thousand, four hundred forty".