6909929249 has 2 divisors, whose sum is σ = 6909929250. Its totient is φ = 6909929248.

The previous prime is 6909929231. The next prime is 6909929281. The reversal of 6909929249 is 9429299096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6632473600 + 277455649 = 81440^2 + 16657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6909929249 is a prime.

It is not a weakly prime, because it can be changed into another prime (6909929149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454964624 + 3454964625.

It is an arithmetic number, because the mean of its divisors is an integer number (3454964625).

Almost surely, 2^6909929249 is an apocalyptic number.

It is an amenable number.

6909929249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6909929249 is an equidigital number, since it uses as much as digits as its factorization.

6909929249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The square root of 6909929249 is about 83125.9841986848. The cubic root of 6909929249 is about 1904.6910169550.

The spelling of 6909929249 in words is "six billion, nine hundred nine million, nine hundred twenty-nine thousand, two hundred forty-nine".