40344434 has 32 divisors (see below), whose sum is σ = 69790896. Its totient is φ = 17326080.

The previous prime is 40344433. The next prime is 40344439. The reversal of 40344434 is 43444304.

It can be written as a sum of positive squares in 8 ways, for example, as 19669225 + 20675209 = 4435^2 + 4547^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (40344433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42404 + ... + 43344.

Almost surely, 2^40344434 is an apocalyptic number.

40344434 is a deficient number, since it is larger than the sum of its proper divisors (29446462).

40344434 is a wasteful number, since it uses less digits than its factorization.

40344434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 40344434 is about 6351.7268518097. The cubic root of 40344434 is about 342.9740082926.

Adding to 40344434 its reverse (43444304), we get a palindrome (83788738).

The spelling of 40344434 in words is "forty million, three hundred forty-four thousand, four hundred thirty-four".