722939 has 8 divisors (see below), whose sum is σ = 833280. Its totient is φ = 614376.

The previous prime is 722933. The next prime is 722963. The reversal of 722939 is 939227.

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

It is not a de Polignac number, because 722939 - 2¹⁶ = 657403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722933) 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 7 ways as a sum of consecutive naturals, for example, 602 + ... + 1344.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2⁷²²⁹³⁹ is an apocalyptic number.

722939 is a deficient number, since it is larger than the sum of its proper divisors (110341).

722939 is a wasteful number, since it uses less digits than its factorization.

722939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889.

The product of its digits is 6804, while the sum is 32.

The square root of 722939 is about 850.2581960793. The cubic root of 722939 is about 89.7498816736.

It can be divided in two parts, 722 and 939, that added together give a palindrome (1661).

The spelling of 722939 in words is "seven hundred twenty-two thousand, nine hundred thirty-nine".