43073897 has 4 divisors (see below), whose sum is σ = 43194240. Its totient is φ = 42953556.

The previous prime is 43073867. The next prime is 43073909. The reversal of 43073897 is 79837034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43073897 - 2¹⁰ = 43072873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43073827) 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, 59633 + ... + 60350.

It is an arithmetic number, because the mean of its divisors is an integer number (10798560).

Almost surely, 2^43073897 is an apocalyptic number.

It is an amenable number.

43073897 is a deficient number, since it is larger than the sum of its proper divisors (120343).

43073897 is a wasteful number, since it uses less digits than its factorization.

43073897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120342.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 43073897 is about 6563.0706989945. The cubic root of 43073897 is about 350.5403815764.

The spelling of 43073897 in words is "forty-three million, seventy-three thousand, eight hundred ninety-seven".