4199749 has 2 divisors, whose sum is σ = 4199750. Its totient is φ = 4199748.

The previous prime is 4199747. The next prime is 4199771. The reversal of 4199749 is 9479914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2220100 + 1979649 = 1490^2 + 1407^2 .

It is a cyclic number.

It is not a de Polignac number, because 4199749 - 2¹ = 4199747 is a prime.

Together with 4199747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4199747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099874 + 2099875.

It is an arithmetic number, because the mean of its divisors is an integer number (2099875).

Almost surely, 2^4199749 is an apocalyptic number.

It is an amenable number.

4199749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4199749 is an equidigital number, since it uses as much as digits as its factorization.

4199749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 4199749 is about 2049.3289145474. The cubic root of 4199749 is about 161.3396504861.

The spelling of 4199749 in words is "four million, one hundred ninety-nine thousand, seven hundred forty-nine".