3688239 has 8 divisors (see below), whose sum is σ = 5032192. Its totient is φ = 2401560.

The previous prime is 3688219. The next prime is 3688241. The reversal of 3688239 is 9328863.

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

It is not a de Polignac number, because 3688239 - 2¹⁷ = 3557167 is a prime.

It is a super-2 number, since 2×3688239² = 27206213842242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3688197 and 3688206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14167 + ... + 14424.

It is an arithmetic number, because the mean of its divisors is an integer number (629024).

Almost surely, 2^3688239 is an apocalyptic number.

3688239 is a deficient number, since it is larger than the sum of its proper divisors (1343953).

3688239 is a wasteful number, since it uses less digits than its factorization.

3688239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28637.

The product of its digits is 62208, while the sum is 39.

The square root of 3688239 is about 1920.4788465380. The cubic root of 3688239 is about 154.5039849833.

The spelling of 3688239 in words is "three million, six hundred eighty-eight thousand, two hundred thirty-nine".