38434409 has 4 divisors (see below), whose sum is σ = 41390916. Its totient is φ = 35477904.

The previous prime is 38434393. The next prime is 38434411. The reversal of 38434409 is 90443483.

38434409 is nontrivially palindromic in base 7.

38434409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12709225 + 25725184 = 3565^2 + 5072^2 .

It is a cyclic number.

It is not a de Polignac number, because 38434409 - 2⁴ = 38434393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38434609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478234 + ... + 1478259.

It is an arithmetic number, because the mean of its divisors is an integer number (10347729).

Almost surely, 2^38434409 is an apocalyptic number.

It is an amenable number.

38434409 is a deficient number, since it is larger than the sum of its proper divisors (2956507).

38434409 is a wasteful number, since it uses less digits than its factorization.

38434409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956506.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 38434409 is about 6199.5490965069. The cubic root of 38434409 is about 337.4738057403.

The spelling of 38434409 in words is "thirty-eight million, four hundred thirty-four thousand, four hundred nine".