40709847920 has 320 divisors, whose sum is σ = 114876147456. Its totient is φ = 13125058560.

The previous prime is 40709847889. The next prime is 40709847923. The reversal of 40709847920 is 2974890704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40709847923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146966822 + ... + 146967098.

Almost surely, 2^40709847920 is an apocalyptic number.

40709847920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40709847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57438073728).

40709847920 is an abundant number, since it is smaller than the sum of its proper divisors (74166299536).

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

40709847920 is a wasteful number, since it uses less digits than its factorization.

40709847920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 40709847920 in words is "forty billion, seven hundred nine million, eight hundred forty-seven thousand, nine hundred twenty".