40212444 has 24 divisors (see below), whose sum is σ = 97065360. Its totient is φ = 12941824.

The previous prime is 40212433. The next prime is 40212449. The reversal of 40212444 is 44421204.

It is a self number, because there is not a number n which added to its sum of digits gives 40212444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57429 + ... + 58124.

It is an arithmetic number, because the mean of its divisors is an integer number (4044390).

Almost surely, 2^40212444 is an apocalyptic number.

It is an amenable number.

40212444 is an abundant number, since it is smaller than the sum of its proper divisors (56852916).

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

40212444 is a wasteful number, since it uses less digits than its factorization.

40212444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115589 (or 115587 counting only the distinct ones).

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

The square root of 40212444 is about 6341.3282520305. The cubic root of 40212444 is about 342.5995774896.

Adding to 40212444 its reverse (44421204), we get a palindrome (84633648).

The spelling of 40212444 in words is "forty million, two hundred twelve thousand, four hundred forty-four".