3989127 has 4 divisors (see below), whose sum is σ = 5318840. Its totient is φ = 2659416.

The previous prime is 3989123. The next prime is 3989137. The reversal of 3989127 is 7219893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7219893 = 3 ⋅2406631.

It is not a de Polignac number, because 3989127 - 2² = 3989123 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664852 + ... + 664857.

It is an arithmetic number, because the mean of its divisors is an integer number (1329710).

Almost surely, 2^3989127 is an apocalyptic number.

3989127 is a deficient number, since it is larger than the sum of its proper divisors (1329713).

3989127 is a wasteful number, since it uses less digits than its factorization.

3989127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329712.

The product of its digits is 27216, while the sum is 39.

The square root of 3989127 is about 1997.2799002644. The cubic root of 3989127 is about 158.5961429124.

The spelling of 3989127 in words is "three million, nine hundred eighty-nine thousand, one hundred twenty-seven".