39976663 has 2 divisors, whose sum is σ = 39976664. Its totient is φ = 39976662.

The previous prime is 39976637. The next prime is 39976711. The reversal of 39976663 is 36667993.

It is a weak prime.

It is an emirp because it is prime and its reverse (36667993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39976663 - 2⁵ = 39976631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39976063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19988331 + 19988332.

It is an arithmetic number, because the mean of its divisors is an integer number (19988332).

Almost surely, 2^39976663 is an apocalyptic number.

39976663 is a deficient number, since it is larger than the sum of its proper divisors (1).

39976663 is an equidigital number, since it uses as much as digits as its factorization.

39976663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 49.

The square root of 39976663 is about 6322.7100993166. The cubic root of 39976663 is about 341.9286668823.

The spelling of 39976663 in words is "thirty-nine million, nine hundred seventy-six thousand, six hundred sixty-three".