43687473 has 8 divisors (see below), whose sum is σ = 58340736. Its totient is φ = 29079600.

The previous prime is 43687459. The next prime is 43687477. The reversal of 43687473 is 37478634.

43687473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 43687473 - 2⁶ = 43687409 is a prime.

It is a super-3 number, since 3×43687473³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (43687477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9033 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (7292592).

Almost surely, 2^43687473 is an apocalyptic number.

It is an amenable number.

43687473 is a deficient number, since it is larger than the sum of its proper divisors (14653263).

43687473 is a wasteful number, since it uses less digits than its factorization.

43687473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22695.

The product of its digits is 338688, while the sum is 42.

The square root of 43687473 is about 6609.6499907332. The cubic root of 43687473 is about 352.1969912558.

The spelling of 43687473 in words is "forty-three million, six hundred eighty-seven thousand, four hundred seventy-three".