39961343 has 2 divisors, whose sum is σ = 39961344. Its totient is φ = 39961342.

The previous prime is 39961331. The next prime is 39961379. The reversal of 39961343 is 34316993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39961343 - 2¹⁴ = 39944959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39961297 and 39961306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39960343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19980671 + 19980672.

It is an arithmetic number, because the mean of its divisors is an integer number (19980672).

Almost surely, 2^39961343 is an apocalyptic number.

39961343 is a deficient number, since it is larger than the sum of its proper divisors (1).

39961343 is an equidigital number, since it uses as much as digits as its factorization.

39961343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 38.

The square root of 39961343 is about 6321.4984774182. The cubic root of 39961343 is about 341.8849829254.

It can be divided in two parts, 39961 and 343, that added together give a palindrome (40304).

The spelling of 39961343 in words is "thirty-nine million, nine hundred sixty-one thousand, three hundred forty-three".