38427809 has 12 divisors (see below), whose sum is σ = 45548244. Its totient is φ = 32314464.

The previous prime is 38427799. The next prime is 38427833. The reversal of 38427809 is 90872483.

It can be written as a sum of positive squares in 2 ways, for example, as 21022225 + 17405584 = 4585^2 + 4172^2 .

It is not a de Polignac number, because 38427809 - 2¹² = 38423713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38427859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4802 + ... + 9995.

It is an arithmetic number, because the mean of its divisors is an integer number (3795687).

Almost surely, 2^38427809 is an apocalyptic number.

It is an amenable number.

38427809 is a deficient number, since it is larger than the sum of its proper divisors (7120435).

38427809 is a wasteful number, since it uses less digits than its factorization.

38427809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864 (or 14857 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 38427809 is about 6199.0167768768. The cubic root of 38427809 is about 337.4544875071.

The spelling of 38427809 in words is "thirty-eight million, four hundred twenty-seven thousand, eight hundred nine".