43673297449 has 4 divisors (see below), whose sum is σ = 46242314964. Its totient is φ = 41104279936.

The previous prime is 43673297431. The next prime is 43673297453. The reversal of 43673297449 is 94479237634.

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 12920414224 + 30752883225 = 113668^2 + 175365^2 .

It is a cyclic number.

It is not a de Polignac number, because 43673297449 - 2¹¹ = 43673295401 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43673297393 and 43673297402.

It is not an unprimeable number, because it can be changed into a prime (43673297249) 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, 1284508732 + ... + 1284508765.

It is an arithmetic number, because the mean of its divisors is an integer number (11560578741).

Almost surely, 2^43673297449 is an apocalyptic number.

It is an amenable number.

43673297449 is a deficient number, since it is larger than the sum of its proper divisors (2569017515).

43673297449 is a wasteful number, since it uses less digits than its factorization.

43673297449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569017514.

The product of its digits is 27433728, while the sum is 58.

The spelling of 43673297449 in words is "forty-three billion, six hundred seventy-three million, two hundred ninety-seven thousand, four hundred forty-nine".