40003244 has 24 divisors (see below), whose sum is σ = 75853008. Its totient is φ = 18385920.

The previous prime is 40003241. The next prime is 40003247. The reversal of 40003244 is 44230004.

It is an interprime number because it is at equal distance from previous prime (40003241) and next prime (40003247).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (40003241) 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, 3917 + ... + 9764.

It is an arithmetic number, because the mean of its divisors is an integer number (3160542).

Almost surely, 2^40003244 is an apocalyptic number.

It is an amenable number.

40003244 is a deficient number, since it is larger than the sum of its proper divisors (35849764).

40003244 is a wasteful number, since it uses less digits than its factorization.

40003244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745 (or 13743 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40003244 is about 6324.8117758555. The cubic root of 40003244 is about 342.0044343554.

Adding to 40003244 its reverse (44230004), we get a palindrome (84233248).

The spelling of 40003244 in words is "forty million, three thousand, two hundred forty-four".