3989617 has 4 divisors (see below), whose sum is σ = 4127220. Its totient is φ = 3852016.

The previous prime is 3989593. The next prime is 3989641. The reversal of 3989617 is 7169893.

3989617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7169893 = 53 ⋅135281.

It is an interprime number because it is at equal distance from previous prime (3989593) and next prime (3989641).

It can be written as a sum of positive squares in 2 ways, for example, as 2547216 + 1442401 = 1596^2 + 1201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68758 + ... + 68815.

It is an arithmetic number, because the mean of its divisors is an integer number (1031805).

Almost surely, 2^3989617 is an apocalyptic number.

It is an amenable number.

3989617 is a deficient number, since it is larger than the sum of its proper divisors (137603).

3989617 is a wasteful number, since it uses less digits than its factorization.

3989617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137602.

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

The square root of 3989617 is about 1997.4025633307. The cubic root of 3989617 is about 158.6026363071.

The spelling of 3989617 in words is "three million, nine hundred eighty-nine thousand, six hundred seventeen".