40400222440 has 16 divisors (see below), whose sum is σ = 90900500580. Its totient is φ = 16160088960.

The previous prime is 40400222417. The next prime is 40400222479. The reversal of 40400222440 is 4422200404.

It can be written as a sum of positive squares in 2 ways, for example, as 39515873796 + 884348644 = 198786^2 + 29738^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505002741 + ... + 505002820.

Almost surely, 2^40400222440 is an apocalyptic number.

40400222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40400222440 is an abundant number, since it is smaller than the sum of its proper divisors (50500278140).

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

40400222440 is a wasteful number, since it uses less digits than its factorization.

40400222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010005572 (or 1010005568 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40400222440 its reverse (4422200404), we get a palindrome (44822422844).

The spelling of 40400222440 in words is "forty billion, four hundred million, two hundred twenty-two thousand, four hundred forty".