809364521 has 8 divisors (see below), whose sum is σ = 926612544. Its totient is φ = 692522640.

The previous prime is 809364499. The next prime is 809364541. The reversal of 809364521 is 125463908.

It is a happy number.

809364521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 809364521 - 2¹⁰ = 809363497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809364541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97250 + ... + 105243.

It is an arithmetic number, because the mean of its divisors is an integer number (115826568).

Almost surely, 2^809364521 is an apocalyptic number.

It is an amenable number.

809364521 is a deficient number, since it is larger than the sum of its proper divisors (117248023).

809364521 is a wasteful number, since it uses less digits than its factorization.

809364521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203071.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 809364521 is about 28449.3325229257. The cubic root of 809364521 is about 931.9259125749.

The spelling of 809364521 in words is "eight hundred nine million, three hundred sixty-four thousand, five hundred twenty-one".