38739847 has 2 divisors, whose sum is σ = 38739848. Its totient is φ = 38739846.

The previous prime is 38739839. The next prime is 38739871. The reversal of 38739847 is 74893783.

It is a weak prime.

It is an emirp because it is prime and its reverse (74893783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38739847 - 2³ = 38739839 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38739847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38739817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19369923 + 19369924.

It is an arithmetic number, because the mean of its divisors is an integer number (19369924).

Almost surely, 2^38739847 is an apocalyptic number.

38739847 is a deficient number, since it is larger than the sum of its proper divisors (1).

38739847 is an equidigital number, since it uses as much as digits as its factorization.

38739847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 38739847 is about 6224.1342369843. The cubic root of 38739847 is about 338.3654154073.

The spelling of 38739847 in words is "thirty-eight million, seven hundred thirty-nine thousand, eight hundred forty-seven".