8436804321 has 16 divisors (see below), whose sum is σ = 12291634368. Its totient is φ = 5104915200.

The previous prime is 8436804307. The next prime is 8436804359. The reversal of 8436804321 is 1234086348.

It is a happy number.

It is not a de Polignac number, because 8436804321 - 2⁷ = 8436804193 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8436804321.

It is not an unprimeable number, because it can be changed into a prime (8436804361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186820 + ... + 227541.

It is an arithmetic number, because the mean of its divisors is an integer number (768227148).

Almost surely, 2^8436804321 is an apocalyptic number.

It is an amenable number.

8436804321 is a deficient number, since it is larger than the sum of its proper divisors (3854830047).

8436804321 is a wasteful number, since it uses less digits than its factorization.

8436804321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414992.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 8436804321 is about 91852.0784794770. The cubic root of 8436804321 is about 2035.7572594022.

The spelling of 8436804321 in words is "eight billion, four hundred thirty-six million, eight hundred four thousand, three hundred twenty-one".