38684923 has 2 divisors, whose sum is σ = 38684924. Its totient is φ = 38684922.

The previous prime is 38684897. The next prime is 38684939. The reversal of 38684923 is 32948683.

It is a strong prime.

It is an emirp because it is prime and its reverse (32948683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38684923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38684923.

It is not a weakly prime, because it can be changed into another prime (38684983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19342461 + 19342462.

It is an arithmetic number, because the mean of its divisors is an integer number (19342462).

Almost surely, 2^38684923 is an apocalyptic number.

38684923 is a deficient number, since it is larger than the sum of its proper divisors (1).

38684923 is an equidigital number, since it uses as much as digits as its factorization.

38684923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 38684923 is about 6219.7204921122. The cubic root of 38684923 is about 338.2054322272.

The spelling of 38684923 in words is "thirty-eight million, six hundred eighty-four thousand, nine hundred twenty-three".