3989045 has 8 divisors (see below), whose sum is σ = 4877496. Its totient is φ = 3130816.

The previous prime is 3989039. The next prime is 3989057. The reversal of 3989045 is 5409893.

It can be written as a sum of positive squares in 4 ways, for example, as 1745041 + 2244004 = 1321^2 + 1498^2 .

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

It is not a de Polignac number, because 3989045 - 2¹⁰ = 3988021 is a prime.

It is a Duffinian 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, 7262 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (609687).

Almost surely, 2^3989045 is an apocalyptic number.

It is an amenable number.

3989045 is a deficient number, since it is larger than the sum of its proper divisors (888451).

3989045 is a wasteful number, since it uses less digits than its factorization.

3989045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15111.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 3989045 is about 1997.2593722399. The cubic root of 3989045 is about 158.5950562108.

The spelling of 3989045 in words is "three million, nine hundred eighty-nine thousand, forty-five".