38879447 has 2 divisors, whose sum is σ = 38879448. Its totient is φ = 38879446.

The previous prime is 38879431. The next prime is 38879461. The reversal of 38879447 is 74497883.

It is a strong prime.

It is an emirp because it is prime and its reverse (74497883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38879447 - 2⁴ = 38879431 is a prime.

It is a super-2 number, since 2×38879447² = 3023222798051618, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38879395 and 38879404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38879417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19439723 + 19439724.

It is an arithmetic number, because the mean of its divisors is an integer number (19439724).

Almost surely, 2^38879447 is an apocalyptic number.

38879447 is a deficient number, since it is larger than the sum of its proper divisors (1).

38879447 is an equidigital number, since it uses as much as digits as its factorization.

38879447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 38879447 is about 6235.3385633821. The cubic root of 38879447 is about 338.7713642386.

The spelling of 38879447 in words is "thirty-eight million, eight hundred seventy-nine thousand, four hundred forty-seven".