3689388 has 60 divisors (see below), whose sum is σ = 9859080. Its totient is φ = 1202688.

The previous prime is 3689377. The next prime is 3689417. The reversal of 3689388 is 8839863.

3689388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3689388² = 27223167629088, which contains 22 as substring.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 19020 + ... + 19212.

It is an arithmetic number, because the mean of its divisors is an integer number (164318).

Almost surely, 2^3689388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3689388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4929540).

3689388 is an abundant number, since it is smaller than the sum of its proper divisors (6169692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3689388 is a wasteful number, since it uses less digits than its factorization.

3689388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 257 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3689388 is about 1920.7779673872. Note that the first 3 decimals coincide. The cubic root of 3689388 is about 154.5200275668.

The spelling of 3689388 in words is "three million, six hundred eighty-nine thousand, three hundred eighty-eight".