40878949392 has 120 divisors (see below), whose sum is σ = 115681569120. Its totient is φ = 13474652160.

The previous prime is 40878949351. The next prime is 40878949403. The reversal of 40878949392 is 29394987804.

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 23 ways as a sum of consecutive naturals, for example, 9874459 + ... + 9878597.

It is an arithmetic number, because the mean of its divisors is an integer number (964013076).

Almost surely, 2^40878949392 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 40878949392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57840784560).

40878949392 is an abundant number, since it is smaller than the sum of its proper divisors (74802619728).

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

40878949392 is a wasteful number, since it uses less digits than its factorization.

40878949392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 40878949392 in words is "forty billion, eight hundred seventy-eight million, nine hundred forty-nine thousand, three hundred ninety-two".