652239443 has 4 divisors (see below), whose sum is σ = 652304928. Its totient is φ = 652173960.

The previous prime is 652239433. The next prime is 652239449. The reversal of 652239443 is 344932256.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652239443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 652239397 and 652239406.

It is not an unprimeable number, because it can be changed into a prime (652239449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14363 + ... + 38868.

It is an arithmetic number, because the mean of its divisors is an integer number (163076232).

Almost surely, 2^652239443 is an apocalyptic number.

652239443 is a deficient number, since it is larger than the sum of its proper divisors (65485).

652239443 is a wasteful number, since it uses less digits than its factorization.

652239443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65484.

The product of its digits is 155520, while the sum is 38.

The square root of 652239443 is about 25538.9788950146. The cubic root of 652239443 is about 867.2327820175.

The spelling of 652239443 in words is "six hundred fifty-two million, two hundred thirty-nine thousand, four hundred forty-three".