43440685 has 8 divisors (see below), whose sum is σ = 52164216. Its totient is φ = 34728960.

The previous prime is 43440679. The next prime is 43440739. The reversal of 43440685 is 58604434.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 24098281 = 4398^2 + 4909^2 .

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

It is not a de Polignac number, because 43440685 - 2⁵ = 43440653 is a prime.

It is a super-2 number, since 2×43440685² = 3774186226538450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43440685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12765 + ... + 15805.

It is an arithmetic number, because the mean of its divisors is an integer number (6520527).

Almost surely, 2^43440685 is an apocalyptic number.

It is an amenable number.

43440685 is a deficient number, since it is larger than the sum of its proper divisors (8723531).

43440685 is a wasteful number, since it uses less digits than its factorization.

43440685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 43440685 is about 6590.9547866754. The cubic root of 43440685 is about 351.5325584443.

The spelling of 43440685 in words is "forty-three million, four hundred forty thousand, six hundred eighty-five".