40340434 has 8 divisors (see below), whose sum is σ = 62146188. Its totient is φ = 19625040.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340434 is 43404304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38477209 + 1863225 = 6203^2 + 1365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40340437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272497 + ... + 272644.

Almost surely, 2^40340434 is an apocalyptic number.

40340434 is a deficient number, since it is larger than the sum of its proper divisors (21805754).

40340434 is a wasteful number, since it uses less digits than its factorization.

40340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545180.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40340434 is about 6351.4119690034. The cubic root of 40340434 is about 342.9626730539.

Adding to 40340434 its reverse (43404304), we get a palindrome (83744738).

The spelling of 40340434 in words is "forty million, three hundred forty thousand, four hundred thirty-four".