43993045 has 8 divisors (see below), whose sum is σ = 52845624. Its totient is φ = 35158464.

The previous prime is 43993039. The next prime is 43993049. The reversal of 43993045 is 54039934.

It can be written as a sum of positive squares in 4 ways, for example, as 1077444 + 42915601 = 1038^2 + 6551^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 43993045 - 2⁷ = 43992917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43992995 and 43993013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43993049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (6605703).

Almost surely, 2^43993045 is an apocalyptic number.

It is an amenable number.

43993045 is a deficient number, since it is larger than the sum of its proper divisors (8852579).

43993045 is a wasteful number, since it uses less digits than its factorization.

43993045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8999.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 43993045 is about 6632.7253071419. The cubic root of 43993045 is about 353.0162313610.

The spelling of 43993045 in words is "forty-three million, nine hundred ninety-three thousand, forty-five".