39481369 has 2 divisors, whose sum is σ = 39481370. Its totient is φ = 39481368.

The previous prime is 39481367. The next prime is 39481391. The reversal of 39481369 is 96318493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24950025 + 14531344 = 4995^2 + 3812^2 .

It is a cyclic number.

It is not a de Polignac number, because 39481369 - 2¹ = 39481367 is a prime.

It is a super-2 number, since 2×39481369² = 3117556996228322, which contains 22 as substring.

Together with 39481367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39481367) 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, 19740684 + 19740685.

It is an arithmetic number, because the mean of its divisors is an integer number (19740685).

Almost surely, 2^39481369 is an apocalyptic number.

It is an amenable number.

39481369 is a deficient number, since it is larger than the sum of its proper divisors (1).

39481369 is an equidigital number, since it uses as much as digits as its factorization.

39481369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 39481369 is about 6283.4201673929. The cubic root of 39481369 is about 340.5106772196.

The spelling of 39481369 in words is "thirty-nine million, four hundred eighty-one thousand, three hundred sixty-nine".