39892471349 has 2 divisors, whose sum is σ = 39892471350. Its totient is φ = 39892471348.

The previous prime is 39892471331. The next prime is 39892471357. The reversal of 39892471349 is 94317429893.

39892471349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26412100324 + 13480371025 = 162518^2 + 116105^2 .

It is an emirp because it is prime and its reverse (94317429893) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39892471349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39892471309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19946235674 + 19946235675.

It is an arithmetic number, because the mean of its divisors is an integer number (19946235675).

Almost surely, 2^39892471349 is an apocalyptic number.

It is an amenable number.

39892471349 is a deficient number, since it is larger than the sum of its proper divisors (1).

39892471349 is an equidigital number, since it uses as much as digits as its factorization.

39892471349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 59.

The spelling of 39892471349 in words is "thirty-nine billion, eight hundred ninety-two million, four hundred seventy-one thousand, three hundred forty-nine".