3989435 has 4 divisors (see below), whose sum is σ = 4787328. Its totient is φ = 3191544.

The previous prime is 3989431. The next prime is 3989437. The reversal of 3989435 is 5349893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5349893 = 107 ⋅49999.

It is a cyclic number.

It is not a de Polignac number, because 3989435 - 2² = 3989431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3989392 and 3989401.

It is not an unprimeable number, because it can be changed into a prime (3989431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398939 + ... + 398948.

It is an arithmetic number, because the mean of its divisors is an integer number (1196832).

Almost surely, 2^3989435 is an apocalyptic number.

3989435 is a deficient number, since it is larger than the sum of its proper divisors (797893).

3989435 is an equidigital number, since it uses as much as digits as its factorization.

3989435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797892.

The product of its digits is 116640, while the sum is 41.

The square root of 3989435 is about 1997.3570036426. The cubic root of 3989435 is about 158.6002245369.

The spelling of 3989435 in words is "three million, nine hundred eighty-nine thousand, four hundred thirty-five".