43345409 has 8 divisors (see below), whose sum is σ = 46689792. Its totient is φ = 40122720.

The previous prime is 43345391. The next prime is 43345433. The reversal of 43345409 is 90454334.

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 43345409 - 2⁸ = 43345153 is a prime.

It is a super-3 number, since 3×43345409³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43345439) 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, 29684 + ... + 31109.

It is an arithmetic number, because the mean of its divisors is an integer number (5836224).

Almost surely, 2^43345409 is an apocalyptic number.

It is an amenable number.

43345409 is a deficient number, since it is larger than the sum of its proper divisors (3344383).

43345409 is a wasteful number, since it uses less digits than its factorization.

43345409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60847.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 43345409 is about 6583.7230348793. The cubic root of 43345409 is about 351.2753714951.

The spelling of 43345409 in words is "forty-three million, three hundred forty-five thousand, four hundred nine".