4406640732 has 144 divisors (see below), whose sum is σ = 12646294752. Its totient is φ = 1333428480.

The previous prime is 4406640709. The next prime is 4406640739. The reversal of 4406640732 is 2370466044.

4406640732 is a `hidden beast` number, since 4 + 4 + 0 + 6 + 640 + 7 + 3 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4406640739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 767938 + ... + 773654.

Almost surely, 2^4406640732 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 4406640732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6323147376).

4406640732 is an abundant number, since it is smaller than the sum of its proper divisors (8239654020).

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

4406640732 is a wasteful number, since it uses less digits than its factorization.

4406640732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810 (or 5796 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 4406640732 is about 66382.5333352080. The cubic root of 4406640732 is about 1639.4665045402.

The spelling of 4406640732 in words is "four billion, four hundred six million, six hundred forty thousand, seven hundred thirty-two".