4063989 has 4 divisors (see below), whose sum is σ = 5418656. Its totient is φ = 2709324.

The previous prime is 4063963. The next prime is 4063991. The reversal of 4063989 is 9893604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4063989 - 2⁵ = 4063957 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

4063989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4063909) 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, 677329 + ... + 677334.

It is an arithmetic number, because the mean of its divisors is an integer number (1354664).

Almost surely, 2^4063989 is an apocalyptic number.

It is an amenable number.

4063989 is a deficient number, since it is larger than the sum of its proper divisors (1354667).

4063989 is a wasteful number, since it uses less digits than its factorization.

4063989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354666.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 4063989 is about 2015.9337786743. The cubic root of 4063989 is about 159.5820995495.

The spelling of 4063989 in words is "four million, sixty-three thousand, nine hundred eighty-nine".