3698989 has 8 divisors (see below), whose sum is σ = 4326080. Its totient is φ = 3096576.

The previous prime is 3698969. The next prime is 3698999. The reversal of 3698989 is 9898963.

3698989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3698989 - 2⁵ = 3698957 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 (3698909) 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 7 ways as a sum of consecutive naturals, for example, 5844 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (540760).

Almost surely, 2^3698989 is an apocalyptic number.

It is an amenable number.

3698989 is a deficient number, since it is larger than the sum of its proper divisors (627091).

3698989 is a wasteful number, since it uses less digits than its factorization.

3698989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339.

The product of its digits is 839808, while the sum is 52.

The square root of 3698989 is about 1923.2755912765. The cubic root of 3698989 is about 154.6539487619.

The spelling of 3698989 in words is "three million, six hundred ninety-eight thousand, nine hundred eighty-nine".