39648671 has 2 divisors, whose sum is σ = 39648672. Its totient is φ = 39648670.

The previous prime is 39648667. The next prime is 39648673. The reversal of 39648671 is 17684693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39648671 - 2² = 39648667 is a prime.

It is a super-2 number, since 2×39648671² = 3144034224132482, which contains 22 as substring.

Together with 39648673, 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 (39648673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19824335 + 19824336.

It is an arithmetic number, because the mean of its divisors is an integer number (19824336).

Almost surely, 2^39648671 is an apocalyptic number.

39648671 is a deficient number, since it is larger than the sum of its proper divisors (1).

39648671 is an equidigital number, since it uses as much as digits as its factorization.

39648671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 39648671 is about 6296.7190663075. The cubic root of 39648671 is about 340.9909699108.

The spelling of 39648671 in words is "thirty-nine million, six hundred forty-eight thousand, six hundred seventy-one".