38493839 has 2 divisors, whose sum is σ = 38493840. Its totient is φ = 38493838.

The previous prime is 38493821. The next prime is 38493841. The reversal of 38493839 is 93839483.

It is a strong prime.

It is an emirp because it is prime and its reverse (93839483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38493839 - 2⁸ = 38493583 is a prime.

Together with 38493841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38493793 and 38493802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38493239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19246919 + 19246920.

It is an arithmetic number, because the mean of its divisors is an integer number (19246920).

Almost surely, 2^38493839 is an apocalyptic number.

38493839 is a deficient number, since it is larger than the sum of its proper divisors (1).

38493839 is an equidigital number, since it uses as much as digits as its factorization.

38493839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 38493839 is about 6204.3403356038. The cubic root of 38493839 is about 337.6476581145.

The spelling of 38493839 in words is "thirty-eight million, four hundred ninety-three thousand, eight hundred thirty-nine".