38078939 has 2 divisors, whose sum is σ = 38078940. Its totient is φ = 38078938.

The previous prime is 38078927. The next prime is 38078941. The reversal of 38078939 is 93987083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38078939 - 2⁴ = 38078923 is a prime.

Together with 38078941, 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 = 38078893 and 38078902.

It is not a weakly prime, because it can be changed into another prime (38078039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19039469 + 19039470.

It is an arithmetic number, because the mean of its divisors is an integer number (19039470).

Almost surely, 2^38078939 is an apocalyptic number.

38078939 is a deficient number, since it is larger than the sum of its proper divisors (1).

38078939 is an equidigital number, since it uses as much as digits as its factorization.

38078939 is an evil number, because the sum of its binary digits is even.

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

The square root of 38078939 is about 6170.8134795989. The cubic root of 38078939 is about 336.4301787669.

The spelling of 38078939 in words is "thirty-eight million, seventy-eight thousand, nine hundred thirty-nine".