3806989 has 4 divisors (see below), whose sum is σ = 3810940. Its totient is φ = 3803040.

The previous prime is 3806981. The next prime is 3807053. The reversal of 3806989 is 9896083.

3806989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2160900 + 1646089 = 1470^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 3806989 - 2³ = 3806981 is a prime.

It is a super-2 number, since 2×3806989² = 28986330492242, which contains 22 as substring.

It is a Duffinian number.

3806989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529 + ... + 2809.

It is an arithmetic number, because the mean of its divisors is an integer number (952735).

Almost surely, 2^3806989 is an apocalyptic number.

It is an amenable number.

3806989 is a deficient number, since it is larger than the sum of its proper divisors (3951).

3806989 is a wasteful number, since it uses less digits than its factorization.

3806989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3806989 is about 1951.1506861337. The cubic root of 3806989 is about 156.1446855126.

The spelling of 3806989 in words is "three million, eight hundred six thousand, nine hundred eighty-nine".