6940348729 has 2 divisors, whose sum is σ = 6940348730. Its totient is φ = 6940348728.

The previous prime is 6940348699. The next prime is 6940348819. The reversal of 6940348729 is 9278430496.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6935058729 + 5290000 = 83277^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 6940348729 - 2¹⁵ = 6940315961 is a prime.

It is not a weakly prime, because it can be changed into another prime (6940318729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3470174364 + 3470174365.

It is an arithmetic number, because the mean of its divisors is an integer number (3470174365).

Almost surely, 2^6940348729 is an apocalyptic number.

It is an amenable number.

6940348729 is a deficient number, since it is larger than the sum of its proper divisors (1).

6940348729 is an equidigital number, since it uses as much as digits as its factorization.

6940348729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The square root of 6940348729 is about 83308.7554162226. The cubic root of 6940348729 is about 1907.4819232564.

The spelling of 6940348729 in words is "six billion, nine hundred forty million, three hundred forty-eight thousand, seven hundred twenty-nine".