40002440412 has 96 divisors (see below), whose sum is σ = 102357448704. Its totient is φ = 12058675200.

The previous prime is 40002440389. The next prime is 40002440417. The reversal of 40002440412 is 21404420004.

It is a super-2 number, since 2×40002440412² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002440417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40365237 + ... + 40366227.

It is an arithmetic number, because the mean of its divisors is an integer number (1066223424).

Almost surely, 2^40002440412 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 40002440412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51178724352).

40002440412 is an abundant number, since it is smaller than the sum of its proper divisors (62355008292).

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

40002440412 is a wasteful number, since it uses less digits than its factorization.

40002440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 40002440412 its reverse (21404420004), we get a palindrome (61406860416).

The spelling of 40002440412 in words is "forty billion, two million, four hundred forty thousand, four hundred twelve".