43440946 has 4 divisors (see below), whose sum is σ = 65161422. Its totient is φ = 21720472.

The previous prime is 43440941. The next prime is 43440959. The reversal of 43440946 is 64904434.

It is a happy number.

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., 40182921 + 3258025 = 6339^2 + 1805^2 .

It is not an unprimeable number, because it can be changed into a prime (43440941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10860235 + ... + 10860238.

Almost surely, 2^43440946 is an apocalyptic number.

43440946 is a deficient number, since it is larger than the sum of its proper divisors (21720476).

43440946 is a wasteful number, since it uses less digits than its factorization.

43440946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21720475.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 43440946 is about 6590.9745865084. The cubic root of 43440946 is about 351.5332624680.

The spelling of 43440946 in words is "forty-three million, four hundred forty thousand, nine hundred forty-six".