3989019 has 4 divisors (see below), whose sum is σ = 5318696. Its totient is φ = 2659344.

The previous prime is 3989009. The next prime is 3989021. The reversal of 3989019 is 9109893.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3989019 - 2⁴ = 3989003 is a prime.

It is a super-2 number, since 2×3989019² = 31824545164722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3989009) 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, 664834 + ... + 664839.

It is an arithmetic number, because the mean of its divisors is an integer number (1329674).

Almost surely, 2^3989019 is an apocalyptic number.

3989019 is a deficient number, since it is larger than the sum of its proper divisors (1329677).

3989019 is a wasteful number, since it uses less digits than its factorization.

3989019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329676.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3989019 is about 1997.2528633100. The cubic root of 3989019 is about 158.5947116437.

The spelling of 3989019 in words is "three million, nine hundred eighty-nine thousand, nineteen".