3429749 has 2 divisors, whose sum is σ = 3429750. Its totient is φ = 3429748.

The previous prime is 3429721. The next prime is 3429757. The reversal of 3429749 is 9479243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2829124 + 600625 = 1682^2 + 775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3429749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3429779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1714874 + 1714875.

It is an arithmetic number, because the mean of its divisors is an integer number (1714875).

Almost surely, 2^3429749 is an apocalyptic number.

It is an amenable number.

3429749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3429749 is an equidigital number, since it uses as much as digits as its factorization.

3429749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 3429749 is about 1851.9581528750. The cubic root of 3429749 is about 150.8067495519.

The spelling of 3429749 in words is "three million, four hundred twenty-nine thousand, seven hundred forty-nine".