39948347 has 2 divisors, whose sum is σ = 39948348. Its totient is φ = 39948346.

The previous prime is 39948331. The next prime is 39948353. The reversal of 39948347 is 74384993.

It is a strong prime.

It is an emirp because it is prime and its reverse (74384993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39948347 - 2⁴ = 39948331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39948397) 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, 19974173 + 19974174.

It is an arithmetic number, because the mean of its divisors is an integer number (19974174).

Almost surely, 2^39948347 is an apocalyptic number.

39948347 is a deficient number, since it is larger than the sum of its proper divisors (1).

39948347 is an equidigital number, since it uses as much as digits as its factorization.

39948347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 39948347 is about 6320.4704729949. The cubic root of 39948347 is about 341.8479169457.

The spelling of 39948347 in words is "thirty-nine million, nine hundred forty-eight thousand, three hundred forty-seven".