43306873 has 4 divisors (see below), whose sum is σ = 43648000. Its totient is φ = 42965748.

The previous prime is 43306867. The next prime is 43306919. The reversal of 43306873 is 37860334.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37860334 = 2 ⋅18930167.

It is a cyclic number.

It is not a de Polignac number, because 43306873 - 2⁵ = 43306841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43306853) 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, 170373 + ... + 170626.

It is an arithmetic number, because the mean of its divisors is an integer number (10912000).

Almost surely, 2^43306873 is an apocalyptic number.

It is an amenable number.

43306873 is a deficient number, since it is larger than the sum of its proper divisors (341127).

43306873 is a wasteful number, since it uses less digits than its factorization.

43306873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341126.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 43306873 is about 6580.7957725491. The cubic root of 43306873 is about 351.1712408109.

It can be divided in two parts, 43 and 306873, that added together give a square (306916 = 554²).

The spelling of 43306873 in words is "forty-three million, three hundred six thousand, eight hundred seventy-three".