38440505 has 4 divisors (see below), whose sum is σ = 46128612. Its totient is φ = 30752400.

The previous prime is 38440489. The next prime is 38440511. The reversal of 38440505 is 50504483.

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 10445824 + 27994681 = 3232^2 + 5291^2 .

It is not a de Polignac number, because 38440505 - 2⁴ = 38440489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844046 + ... + 3844055.

It is an arithmetic number, because the mean of its divisors is an integer number (11532153).

Almost surely, 2^38440505 is an apocalyptic number.

It is an amenable number.

38440505 is a deficient number, since it is larger than the sum of its proper divisors (7688107).

38440505 is an equidigital number, since it uses as much as digits as its factorization.

38440505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688106.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 38440505 is about 6200.0407256727. The cubic root of 38440505 is about 337.4916467983.

Adding to 38440505 its reverse (50504483), we get a palindrome (88944988).

The spelling of 38440505 in words is "thirty-eight million, four hundred forty thousand, five hundred five".