40311444 has 12 divisors (see below), whose sum is σ = 94060064. Its totient is φ = 13437144.

The previous prime is 40311443. The next prime is 40311461. The reversal of 40311444 is 44411304.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 40311444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40311443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679632 + ... + 1679655.

Almost surely, 2^40311444 is an apocalyptic number.

It is an amenable number.

40311444 is an abundant number, since it is smaller than the sum of its proper divisors (53748620).

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

40311444 is a wasteful number, since it uses less digits than its factorization.

40311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359294 (or 3359292 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40311444 is about 6349.1293891367. The cubic root of 40311444 is about 342.8804985082.

Adding to 40311444 its reverse (44411304), we get a palindrome (84722748).

It can be divided in two parts, 40311 and 444, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 40311444 in words is "forty million, three hundred eleven thousand, four hundred forty-four".