649239 has 8 divisors (see below), whose sum is σ = 889200. Its totient is φ = 421056.

The previous prime is 649217. The next prime is 649261. The reversal of 649239 is 932946.

649239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649217) and next prime (649261).

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

It is not a de Polignac number, because 649239 - 2¹⁹ = 124951 is a prime.

It is a super-2 number, since 2×649239² = 843022558242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 4⁴ + 2¹⁹ + 9⁴ + 3¹⁰ + 9⁵ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649239.

It is not an unprimeable number, because it can be changed into a prime (649279) 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, 2814 + ... + 3035.

It is an arithmetic number, because the mean of its divisors is an integer number (111150).

2⁶⁴⁹²³⁹ is an apocalyptic number.

649239 is a deficient number, since it is larger than the sum of its proper divisors (239961).

649239 is a wasteful number, since it uses less digits than its factorization.

649239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889.

The product of its digits is 11664, while the sum is 33.

The square root of 649239 is about 805.7536844471. The cubic root of 649239 is about 86.5900917963.

It can be divided in two parts, 649 and 239, that added together give a palindrome (888).

The spelling of 649239 in words is "six hundred forty-nine thousand, two hundred thirty-nine".