38248409 has 4 divisors (see below), whose sum is σ = 38326800. Its totient is φ = 38170020.

The previous prime is 38248393. The next prime is 38248411. The reversal of 38248409 is 90484283.

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: 90484283 = 6709 ⋅13487.

It is a cyclic number.

It is not a de Polignac number, because 38248409 - 2⁴ = 38248393 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (38248429) 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, 38459 + ... + 39440.

It is an arithmetic number, because the mean of its divisors is an integer number (9581700).

Almost surely, 2^38248409 is an apocalyptic number.

It is an amenable number.

38248409 is a deficient number, since it is larger than the sum of its proper divisors (78391).

38248409 is an equidigital number, since it uses as much as digits as its factorization.

38248409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78390.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 38248409 is about 6184.5298123625. The cubic root of 38248409 is about 336.9285334223.

The spelling of 38248409 in words is "thirty-eight million, two hundred forty-eight thousand, four hundred nine".