43432069 has 4 divisors (see below), whose sum is σ = 44251596. Its totient is φ = 42612544.

The previous prime is 43432057. The next prime is 43432091. The reversal of 43432069 is 96023434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30935844 + 12496225 = 5562^2 + 3535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43432069 is a prime.

It is a super-2 number, since 2×43432069² = 3772689235241522, 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 43432069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43432019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409684 + ... + 409789.

It is an arithmetic number, because the mean of its divisors is an integer number (11062899).

Almost surely, 2^43432069 is an apocalyptic number.

It is an amenable number.

43432069 is a deficient number, since it is larger than the sum of its proper divisors (819527).

43432069 is an equidigital number, since it uses as much as digits as its factorization.

43432069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819526.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 43432069 is about 6590.3011312079. The cubic root of 43432069 is about 351.5093159870.

The spelling of 43432069 in words is "forty-three million, four hundred thirty-two thousand, sixty-nine".