40004400212 has 48 divisors (see below), whose sum is σ = 85808903040. Its totient is φ = 15935916672.

The previous prime is 40004400211. The next prime is 40004400251. The reversal of 40004400212 is 21200440004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004400211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681203 + ... + 737594.

It is an arithmetic number, because the mean of its divisors is an integer number (1787685480).

Almost surely, 2^40004400212 is an apocalyptic number.

It is an amenable number.

40004400212 is an abundant number, since it is smaller than the sum of its proper divisors (45804502828).

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

40004400212 is a wasteful number, since it uses less digits than its factorization.

40004400212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418880 (or 1418878 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 40004400212 its reverse (21200440004), we get a palindrome (61204840216).

The spelling of 40004400212 in words is "forty billion, four million, four hundred thousand, two hundred twelve".