3438129847 has 2 divisors, whose sum is σ = 3438129848. Its totient is φ = 3438129846.

The previous prime is 3438129841. The next prime is 3438129869. The reversal of 3438129847 is 7489218343.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7489218343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3438129847 - 2³ = 3438129839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3438129847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3438129841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719064923 + 1719064924.

It is an arithmetic number, because the mean of its divisors is an integer number (1719064924).

Almost surely, 2^3438129847 is an apocalyptic number.

3438129847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3438129847 is an equidigital number, since it uses as much as digits as its factorization.

3438129847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 3438129847 is about 58635.5681050333. The cubic root of 3438129847 is about 1509.2948547431.

The spelling of 3438129847 in words is "three billion, four hundred thirty-eight million, one hundred twenty-nine thousand, eight hundred forty-seven".