43040857 has 8 divisors (see below), whose sum is σ = 44507232. Its totient is φ = 41594400.

The previous prime is 43040849. The next prime is 43040863. The reversal of 43040857 is 75804034.

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 43040857 - 2³ = 43040849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43040827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519 + ... + 9292.

It is an arithmetic number, because the mean of its divisors is an integer number (5563404).

Almost surely, 2^43040857 is an apocalyptic number.

It is an amenable number.

43040857 is a deficient number, since it is larger than the sum of its proper divisors (1466375).

43040857 is a wasteful number, since it uses less digits than its factorization.

43040857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 43040857 is about 6560.5531016828. The cubic root of 43040857 is about 350.4507308631.

The spelling of 43040857 in words is "forty-three million, forty thousand, eight hundred fifty-seven".