8404756385 has 16 divisors (see below), whose sum is σ = 10206939600. Its totient is φ = 6643101696.

The previous prime is 8404756369. The next prime is 8404756403. The reversal of 8404756385 is 5836574048.

It can be written as a sum of positive squares in 8 ways, for example, as 2265093649 + 6139662736 = 47593^2 + 78356^2 .

It is a cyclic number.

It is not a de Polignac number, because 8404756385 - 2⁴ = 8404756369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629297 + ... + 642513.

It is an arithmetic number, because the mean of its divisors is an integer number (637933725).

Almost surely, 2^8404756385 is an apocalyptic number.

It is an amenable number.

8404756385 is a deficient number, since it is larger than the sum of its proper divisors (1802183215).

8404756385 is a wasteful number, since it uses less digits than its factorization.

8404756385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14740.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The square root of 8404756385 is about 91677.4584344483. The cubic root of 8404756385 is about 2033.1763215826.

The spelling of 8404756385 in words is "eight billion, four hundred four million, seven hundred fifty-six thousand, three hundred eighty-five".