4002989 has 8 divisors (see below), whose sum is σ = 4199040. Its totient is φ = 3808816.

The previous prime is 4002983. The next prime is 4002991. The reversal of 4002989 is 9892004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4002989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002983) 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, 5864 + ... + 6510.

It is an arithmetic number, because the mean of its divisors is an integer number (524880).

Almost surely, 2^4002989 is an apocalyptic number.

It is an amenable number.

4002989 is a deficient number, since it is larger than the sum of its proper divisors (196051).

4002989 is a wasteful number, since it uses less digits than its factorization.

4002989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 4002989 is about 2000.7471104565. The cubic root of 4002989 is about 158.7796348668.

The spelling of 4002989 in words is "four million, two thousand, nine hundred eighty-nine".