40120447392 has 192 divisors, whose sum is σ = 120494424960. Its totient is φ = 12978081792.

The previous prime is 40120447363. The next prime is 40120447447. The reversal of 40120447392 is 29374402104.

40120447392 is a `hidden beast` number, since 4 + 0 + 120 + 447 + 3 + 92 = 666.

40120447392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14160408 + ... + 14163240.

It is an arithmetic number, because the mean of its divisors is an integer number (627575130).

Almost surely, 2^40120447392 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 40120447392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60247212480).

40120447392 is an abundant number, since it is smaller than the sum of its proper divisors (80373977568).

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

40120447392 is a wasteful number, since it uses less digits than its factorization.

40120447392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332 (or 3318 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 40120447392 its reverse (29374402104), we get a palindrome (69494849496).

The spelling of 40120447392 in words is "forty billion, one hundred twenty million, four hundred forty-seven thousand, three hundred ninety-two".