38840279 has 2 divisors, whose sum is σ = 38840280. Its totient is φ = 38840278.

The previous prime is 38840273. The next prime is 38840281. The reversal of 38840279 is 97204883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38840279 - 2⁸ = 38840023 is a prime.

Together with 38840281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38840273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19420139 + 19420140.

It is an arithmetic number, because the mean of its divisors is an integer number (19420140).

Almost surely, 2^38840279 is an apocalyptic number.

38840279 is a deficient number, since it is larger than the sum of its proper divisors (1).

38840279 is an equidigital number, since it uses as much as digits as its factorization.

38840279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 38840279 is about 6232.1969641532. The cubic root of 38840279 is about 338.6575641364.

The spelling of 38840279 in words is "thirty-eight million, eight hundred forty thousand, two hundred seventy-nine".