43459994 has 4 divisors (see below), whose sum is σ = 65189994. Its totient is φ = 21729996.

The previous prime is 43459993. The next prime is 43460017. The reversal of 43459994 is 49995434.

43459994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 20295025 = 4813^2 + 4505^2 .

It is not an unprimeable number, because it can be changed into a prime (43459991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10864997 + ... + 10865000.

Almost surely, 2^43459994 is an apocalyptic number.

43459994 is a deficient number, since it is larger than the sum of its proper divisors (21730000).

43459994 is a wasteful number, since it uses less digits than its factorization.

43459994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21729999.

The product of its digits is 699840, while the sum is 47.

The square root of 43459994 is about 6592.4194344717. The cubic root of 43459994 is about 351.5846350995.

The spelling of 43459994 in words is "forty-three million, four hundred fifty-nine thousand, nine hundred ninety-four".