8309449476 has 90 divisors (see below), whose sum is σ = 22708532462. Its totient is φ = 2649335040.

The previous prime is 8309449471. The next prime is 8309449579. The reversal of 8309449476 is 6749449038.

It is a happy number.

8309449476 is a `hidden beast` number, since 83 + 0 + 9 + 4 + 494 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8295566400 + 13883076 = 91080^2 + 3726^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8309449471) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 147156 + ... + 195636.

Almost surely, 2^8309449476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8309449476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11354266231).

8309449476 is an abundant number, since it is smaller than the sum of its proper divisors (14399082986).

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

8309449476 is a wasteful number, since it uses less digits than its factorization.

8309449476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48543 (or 48509 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 8309449476 is about 91156.1817761143. The cubic root of 8309449476 is about 2025.4619258971.

The spelling of 8309449476 in words is "eight billion, three hundred nine million, four hundred forty-nine thousand, four hundred seventy-six".