40344040 has 32 divisors (see below), whose sum is σ = 99027360. Its totient is φ = 14670400.

The previous prime is 40344037. The next prime is 40344091. The reversal of 40344040 is 4044304.

It is a junction number, because it is equal to n+sod(n) for n = 40343999 and 40344017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45406 + ... + 46285.

It is an arithmetic number, because the mean of its divisors is an integer number (3094605).

Almost surely, 2^40344040 is an apocalyptic number.

40344040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40344040 is an abundant number, since it is smaller than the sum of its proper divisors (58683320).

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

40344040 is a wasteful number, since it uses less digits than its factorization.

40344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91713 (or 91709 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40344040 is about 6351.6958365463. The cubic root of 40344040 is about 342.9728918049.

Adding to 40344040 its reverse (4044304), we get a palindrome (44388344).

The spelling of 40344040 in words is "forty million, three hundred forty-four thousand, forty".