3989919 has 8 divisors (see below), whose sum is σ = 5339952. Its totient is φ = 2649920.

The previous prime is 3989903. The next prime is 3989929. The reversal of 3989919 is 9199893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3989919 - 2⁴ = 3989903 is a prime.

It is a super-2 number, since 2×3989919² = 31838907253122, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524 + ... + 3209.

It is an arithmetic number, because the mean of its divisors is an integer number (667494).

Almost surely, 2^3989919 is an apocalyptic number.

3989919 is a deficient number, since it is larger than the sum of its proper divisors (1350033).

3989919 is a wasteful number, since it uses less digits than its factorization.

3989919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017.

The product of its digits is 157464, while the sum is 48.

The square root of 3989919 is about 1997.4781600809. The cubic root of 3989919 is about 158.6066380937.

The spelling of 3989919 in words is "three million, nine hundred eighty-nine thousand, nine hundred nineteen".