40011444 has 108 divisors (see below), whose sum is σ = 115944192. Its totient is φ = 11536800.

The previous prime is 40011437. The next prime is 40011469. The reversal of 40011444 is 44411004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 209389 + ... + 209579.

Almost surely, 2^40011444 is an apocalyptic number.

40011444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40011444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57972096).

40011444 is an abundant number, since it is smaller than the sum of its proper divisors (75932748).

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

40011444 is a wasteful number, since it uses less digits than its factorization.

40011444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 40011444 is about 6325.4599832739. The cubic root of 40011444 is about 342.0278011667.

Adding to 40011444 its reverse (44411004), we get a palindrome (84422448).

It can be divided in two parts, 4001 and 1444, that added together give a palindrome (5445).

The spelling of 40011444 in words is "forty million, eleven thousand, four hundred forty-four".