3989365 has 8 divisors (see below), whose sum is σ = 4800600. Its totient is φ = 3182592.

The previous prime is 3989351. The next prime is 3989371. The reversal of 3989365 is 5639893.

It can be written as a sum of positive squares in 4 ways, for example, as 552049 + 3437316 = 743^2 + 1854^2 .

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 3989365 - 2⁵ = 3989333 is a prime.

3989365 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357 + ... + 3133.

It is an arithmetic number, because the mean of its divisors is an integer number (600075).

Almost surely, 2^3989365 is an apocalyptic number.

It is an amenable number.

3989365 is a deficient number, since it is larger than the sum of its proper divisors (811235).

3989365 is a wasteful number, since it uses less digits than its factorization.

3989365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its digits is 174960, while the sum is 43.

The square root of 3989365 is about 1997.3394804089. The cubic root of 3989365 is about 158.5992969134.

The spelling of 3989365 in words is "three million, nine hundred eighty-nine thousand, three hundred sixty-five".