43407869 has 2 divisors, whose sum is σ = 43407870. Its totient is φ = 43407868.

The previous prime is 43407853. The next prime is 43407899. The reversal of 43407869 is 96870434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30946969 + 12460900 = 5563^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 43407869 - 2⁴ = 43407853 is a prime.

It is a super-2 number, since 2×43407869² = 3768486182242322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43407829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21703934 + 21703935.

It is an arithmetic number, because the mean of its divisors is an integer number (21703935).

Almost surely, 2^43407869 is an apocalyptic number.

It is an amenable number.

43407869 is a deficient number, since it is larger than the sum of its proper divisors (1).

43407869 is an equidigital number, since it uses as much as digits as its factorization.

43407869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 43407869 is about 6588.4648439526. The cubic root of 43407869 is about 351.4440178018. Note that the first 3 decimals are identical.

The spelling of 43407869 in words is "forty-three million, four hundred seven thousand, eight hundred sixty-nine".