40709312 has 56 divisors (see below), whose sum is σ = 93451680. Its totient is φ = 17233920.

The previous prime is 40709219. The next prime is 40709329. The reversal of 40709312 is 21390704.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39362 + ... + 40382.

It is an arithmetic number, because the mean of its divisors is an integer number (1668780).

Almost surely, 2^40709312 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 40709312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46725840).

40709312 is an abundant number, since it is smaller than the sum of its proper divisors (52742368).

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

40709312 is a wasteful number, since it uses less digits than its factorization.

40709312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40709312 is about 6380.3849413652. The cubic root of 40709312 is about 344.0048674271.

The spelling of 40709312 in words is "forty million, seven hundred nine thousand, three hundred twelve".