43340434 has 4 divisors (see below), whose sum is σ = 65010654. Its totient is φ = 21670216.

The previous prime is 43340417. The next prime is 43340477. The reversal of 43340434 is 43404334.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43404334 = 2 ⋅21702167.

It can be written as a sum of positive squares in only one way, i.e., 23493409 + 19847025 = 4847^2 + 4455^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43340399 and 43340408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10835107 + ... + 10835110.

Almost surely, 2^43340434 is an apocalyptic number.

43340434 is a deficient number, since it is larger than the sum of its proper divisors (21670220).

43340434 is a wasteful number, since it uses less digits than its factorization.

43340434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21670219.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 43340434 is about 6583.3451983015. The cubic root of 43340434 is about 351.2619316877.

Adding to 43340434 its reverse (43404334), we get a palindrome (86744768).

The spelling of 43340434 in words is "forty-three million, three hundred forty thousand, four hundred thirty-four".