6909929149 has 2 divisors, whose sum is σ = 6909929150. Its totient is φ = 6909929148.

The previous prime is 6909929141. The next prime is 6909929153. The reversal of 6909929149 is 9419299096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4256649049 + 2653280100 = 65243^2 + 51510^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909929149 - 2³ = 6909929141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6909929093 and 6909929102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6909929141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454964574 + 3454964575.

It is an arithmetic number, because the mean of its divisors is an integer number (3454964575).

Almost surely, 2^6909929149 is an apocalyptic number.

It is an amenable number.

6909929149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6909929149 is an equidigital number, since it uses as much as digits as its factorization.

6909929149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2834352, while the sum is 58.

The square root of 6909929149 is about 83125.9835971882. The cubic root of 6909929149 is about 1904.6910077668.

The spelling of 6909929149 in words is "six billion, nine hundred nine million, nine hundred twenty-nine thousand, one hundred forty-nine".