40011144 has 16 divisors (see below), whose sum is σ = 100027920. Its totient is φ = 13337040.

The previous prime is 40011137. The next prime is 40011151. The reversal of 40011144 is 44111004.

It is an interprime number because it is at equal distance from previous prime (40011137) and next prime (40011151).

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, 833542 + ... + 833589.

It is an arithmetic number, because the mean of its divisors is an integer number (6251745).

Almost surely, 2^40011144 is an apocalyptic number.

It is an amenable number.

40011144 is an abundant number, since it is smaller than the sum of its proper divisors (60016776).

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

40011144 is a wasteful number, since it uses less digits than its factorization.

40011144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667140 (or 1667136 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 40011144 is about 6325.4362695390. The cubic root of 40011144 is about 342.0269463396.

Adding to 40011144 its reverse (44111004), we get a palindrome (84122148).

The spelling of 40011144 in words is "forty million, eleven thousand, one hundred forty-four".