39972349 has 2 divisors, whose sum is σ = 39972350. Its totient is φ = 39972348.

The previous prime is 39972337. The next prime is 39972377. The reversal of 39972349 is 94327993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39917124 + 55225 = 6318^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 39972349 - 2⁹ = 39971837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39972299 and 39972308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39972319) 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, 19986174 + 19986175.

It is an arithmetic number, because the mean of its divisors is an integer number (19986175).

Almost surely, 2^39972349 is an apocalyptic number.

It is an amenable number.

39972349 is a deficient number, since it is larger than the sum of its proper divisors (1).

39972349 is an equidigital number, since it uses as much as digits as its factorization.

39972349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 46.

The square root of 39972349 is about 6322.3689389342. The cubic root of 39972349 is about 341.9163669284.

The spelling of 39972349 in words is "thirty-nine million, nine hundred seventy-two thousand, three hundred forty-nine".