38839907 has 4 divisors (see below), whose sum is σ = 39666336. Its totient is φ = 38013480.

The previous prime is 38839901. The next prime is 38839919. The reversal of 38839907 is 70993883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70993883 = 103 ⋅689261.

It is a cyclic number.

It is not a de Polignac number, because 38839907 - 2⁴ = 38839891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 826381 = 38839907 / (3 + 8 + 8 + 3 + 9 + 9 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38839901) 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 3 ways as a sum of consecutive naturals, for example, 413144 + ... + 413237.

It is an arithmetic number, because the mean of its divisors is an integer number (9916584).

Almost surely, 2^38839907 is an apocalyptic number.

38839907 is a deficient number, since it is larger than the sum of its proper divisors (826429).

38839907 is an equidigital number, since it uses as much as digits as its factorization.

38839907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826428.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 38839907 is about 6232.1671190686. The cubic root of 38839907 is about 338.6564829477.

The spelling of 38839907 in words is "thirty-eight million, eight hundred thirty-nine thousand, nine hundred seven".