6429149 has 2 divisors, whose sum is σ = 6429150. Its totient is φ = 6429148.

The previous prime is 6429139. The next prime is 6429151. The reversal of 6429149 is 9419246.

6429149 is digitally balanced in base 3, 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., 4884100 + 1545049 = 2210^2 + 1243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6429149 is a prime.

It is a Sophie Germain prime.

Together with 6429151, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6429109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214574 + 3214575.

It is an arithmetic number, because the mean of its divisors is an integer number (3214575).

Almost surely, 2^6429149 is an apocalyptic number.

It is an amenable number.

6429149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6429149 is an equidigital number, since it uses as much as digits as its factorization.

6429149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 6429149 is about 2535.5766602491. The cubic root of 6429149 is about 185.9449966471.

The spelling of 6429149 in words is "six million, four hundred twenty-nine thousand, one hundred forty-nine".