8409623616 has 63 divisors (see below), whose sum is σ = 24110977813. Its totient is φ = 2802474240.

The previous prime is 8409623603. The next prime is 8409623639. The reversal of 8409623616 is 6163269048.

The square root of 8409623616 is 91704.

It is a perfect power (a square), and thus also a powerful number.

8409623616 is a `hidden beast` number, since 8 + 4 + 0 + 9 + 6 + 23 + 616 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7552305216 + 857318400 = 86904^2 + 29280^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 2198986 + ... + 2202806.

Almost surely, 2^8409623616 is an apocalyptic number.

8409623616 is the 91704-th square number.

It is an amenable number.

8409623616 is an abundant number, since it is smaller than the sum of its proper divisors (15701354197).

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

8409623616 is an frugal number, since it uses more digits than its factorization.

8409623616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660 (or 3826 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The cubic root of 8409623616 is about 2033.5687195980.

It can be divided in two parts, 8409 and 623616, that added together give a square (632025 = 795²).

The spelling of 8409623616 in words is "eight billion, four hundred nine million, six hundred twenty-three thousand, six hundred sixteen".