38239405 has 4 divisors (see below), whose sum is σ = 45887292. Its totient is φ = 30591520.

The previous prime is 38239403. The next prime is 38239441. The reversal of 38239405 is 50493283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50493283 = 71 ⋅711173.

It can be written as a sum of positive squares in 2 ways, for example, as 20775364 + 17464041 = 4558^2 + 4179^2 .

It is not a de Polignac number, because 38239405 - 2¹ = 38239403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38239403) 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, 3823936 + ... + 3823945.

It is an arithmetic number, because the mean of its divisors is an integer number (11471823).

Almost surely, 2^38239405 is an apocalyptic number.

It is an amenable number.

38239405 is a deficient number, since it is larger than the sum of its proper divisors (7647887).

38239405 is an equidigital number, since it uses as much as digits as its factorization.

38239405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7647886.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 38239405 is about 6183.8018241208. The cubic root of 38239405 is about 336.9020927356.

The spelling of 38239405 in words is "thirty-eight million, two hundred thirty-nine thousand, four hundred five".