3649238 has 8 divisors (see below), whose sum is σ = 5601288. Its totient is φ = 1782144.

The previous prime is 3649229. The next prime is 3649241. The reversal of 3649238 is 8329463.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 3649198 and 3649207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21131 + ... + 21302.

It is an arithmetic number, because the mean of its divisors is an integer number (700161).

Almost surely, 2^3649238 is an apocalyptic number.

3649238 is a deficient number, since it is larger than the sum of its proper divisors (1952050).

3649238 is a wasteful number, since it uses less digits than its factorization.

3649238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42478.

The product of its digits is 31104, while the sum is 35.

The square root of 3649238 is about 1910.2978825304. The cubic root of 3649238 is about 153.9574571865.

The spelling of 3649238 in words is "three million, six hundred forty-nine thousand, two hundred thirty-eight".