43294945 has 4 divisors (see below), whose sum is σ = 51953940. Its totient is φ = 34635952.

The previous prime is 43294891. The next prime is 43294949. The reversal of 43294945 is 54949234.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18524416 + 24770529 = 4304^2 + 4977^2 .

It is a cyclic number.

It is not a de Polignac number, because 43294945 - 2²⁵ = 9740513 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43294898 and 43294907.

It is not an unprimeable number, because it can be changed into a prime (43294949) 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, 4329490 + ... + 4329499.

It is an arithmetic number, because the mean of its divisors is an integer number (12988485).

Almost surely, 2^43294945 is an apocalyptic number.

It is an amenable number.

43294945 is a deficient number, since it is larger than the sum of its proper divisors (8658995).

43294945 is an equidigital number, since it uses as much as digits as its factorization.

43294945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8658994.

The product of its digits is 155520, while the sum is 40.

The square root of 43294945 is about 6579.8894367611. The cubic root of 43294945 is about 351.1389968513.

The spelling of 43294945 in words is "forty-three million, two hundred ninety-four thousand, nine hundred forty-five".