3899429 has 2 divisors, whose sum is σ = 3899430. Its totient is φ = 3899428.

The previous prime is 3899411. The next prime is 3899453. The reversal of 3899429 is 9249983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3602404 + 297025 = 1898^2 + 545^2 .

It is an emirp because it is prime and its reverse (9249983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3899429 - 2⁸ = 3899173 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3899429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3890429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949714 + 1949715.

It is an arithmetic number, because the mean of its divisors is an integer number (1949715).

Almost surely, 2^3899429 is an apocalyptic number.

It is an amenable number.

3899429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3899429 is an equidigital number, since it uses as much as digits as its factorization.

3899429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 3899429 is about 1974.6971919765. The cubic root of 3899429 is about 157.3984093328.

The spelling of 3899429 in words is "three million, eight hundred ninety-nine thousand, four hundred twenty-nine".