40404213220 has 96 divisors (see below), whose sum is σ = 99042048000. Its totient is φ = 13839864192.

The previous prime is 40404213173. The next prime is 40404213251. The reversal of 40404213220 is 2231240404.

It is a happy number.

40404213220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40404213191 and 40404213200.

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, 9869494 + ... + 9873586.

It is an arithmetic number, because the mean of its divisors is an integer number (1031688000).

Almost surely, 2^40404213220 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 40404213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49521024000).

40404213220 is an abundant number, since it is smaller than the sum of its proper divisors (58637834780).

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

40404213220 is a wasteful number, since it uses less digits than its factorization.

40404213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40404213220 its reverse (2231240404), we get a palindrome (42635453624).

The spelling of 40404213220 in words is "forty billion, four hundred four million, two hundred thirteen thousand, two hundred twenty".