38338409 has 4 divisors (see below), whose sum is σ = 40356240. Its totient is φ = 36320580.

The previous prime is 38338393. The next prime is 38338423. The reversal of 38338409 is 90483383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90483383 = 8231 ⋅10993.

It is a cyclic number.

It is not a de Polignac number, because 38338409 - 2⁴ = 38338393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38338429) 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, 1008887 + ... + 1008924.

It is an arithmetic number, because the mean of its divisors is an integer number (10089060).

Almost surely, 2^38338409 is an apocalyptic number.

It is an amenable number.

38338409 is a deficient number, since it is larger than the sum of its proper divisors (2017831).

38338409 is a wasteful number, since it uses less digits than its factorization.

38338409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017830.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 38338409 is about 6191.8017571624. The cubic root of 38338409 is about 337.1925950801.

The spelling of 38338409 in words is "thirty-eight million, three hundred thirty-eight thousand, four hundred nine".