3818989 has 4 divisors (see below), whose sum is σ = 3985056. Its totient is φ = 3652924.

The previous prime is 3818977. The next prime is 3819007. The reversal of 3818989 is 9898183.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9898183 = 19 ⋅520957.

It is a cyclic number.

It is not a de Polignac number, because 3818989 - 2¹¹ = 3816941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82999 + ... + 83044.

It is an arithmetic number, because the mean of its divisors is an integer number (996264).

Almost surely, 2^3818989 is an apocalyptic number.

It is an amenable number.

3818989 is a deficient number, since it is larger than the sum of its proper divisors (166067).

3818989 is a wasteful number, since it uses less digits than its factorization.

3818989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166066.

The product of its digits is 124416, while the sum is 46.

The square root of 3818989 is about 1954.2233751544. The cubic root of 3818989 is about 156.3085745190.

The spelling of 3818989 in words is "three million, eight hundred eighteen thousand, nine hundred eighty-nine".