8409772 has 36 divisors (see below), whose sum is σ = 17322984. Its totient is φ = 3561600.

The previous prime is 8409721. The next prime is 8409829. The reversal of 8409772 is 2779048.

It is a happy number.

8409772 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20772 + ... + 21172.

It is an arithmetic number, because the mean of its divisors is an integer number (481194).

Almost surely, 2^8409772 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 8409772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8661492).

8409772 is an abundant number, since it is smaller than the sum of its proper divisors (8913212).

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

8409772 is a wasteful number, since it uses less digits than its factorization.

8409772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 8409772 is about 2899.9606893887. The cubic root of 8409772 is about 203.3580679994.

The spelling of 8409772 in words is "eight million, four hundred nine thousand, seven hundred seventy-two".