3874392647 has 2 divisors, whose sum is σ = 3874392648. Its totient is φ = 3874392646.

The previous prime is 3874392611. The next prime is 3874392649. The reversal of 3874392647 is 7462934783.

It is a strong prime.

It is an emirp because it is prime and its reverse (7462934783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3874392647 - 2¹⁰ = 3874391623 is a prime.

Together with 3874392649, 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 (3874392649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937196323 + 1937196324.

It is an arithmetic number, because the mean of its divisors is an integer number (1937196324).

Almost surely, 2^3874392647 is an apocalyptic number.

3874392647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3874392647 is an equidigital number, since it uses as much as digits as its factorization.

3874392647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 53.

The square root of 3874392647 is about 62244.6194220834. The cubic root of 3874392647 is about 1570.6082605332.

The spelling of 3874392647 in words is "three billion, eight hundred seventy-four million, three hundred ninety-two thousand, six hundred forty-seven".