43172039 has 8 divisors (see below), whose sum is σ = 45081360. Its totient is φ = 41290816.

The previous prime is 43172033. The next prime is 43172069. The reversal of 43172039 is 93027134.

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

It is a cyclic number.

It is not a de Polignac number, because 43172039 - 2⁸ = 43171783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43172033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3854 + ... + 10059.

It is an arithmetic number, because the mean of its divisors is an integer number (5635170).

Almost surely, 2^43172039 is an apocalyptic number.

43172039 is a deficient number, since it is larger than the sum of its proper divisors (1909321).

43172039 is a wasteful number, since it uses less digits than its factorization.

43172039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14049.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 43172039 is about 6570.5432804297. The cubic root of 43172039 is about 350.8064099693.

The spelling of 43172039 in words is "forty-three million, one hundred seventy-two thousand, thirty-nine".