722238739 has 8 divisors (see below), whose sum is σ = 740315520. Its totient is φ = 704184000.

The previous prime is 722238733. The next prime is 722238743. The reversal of 722238739 is 937832227.

722238739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 722238739 - 2³ = 722238731 is a prime.

It is a super-2 number, since 2×722238739² = 1043257592224620242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722238695 and 722238704.

It is not an unprimeable number, because it can be changed into a prime (722238731) 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, 75477 + ... + 84505.

It is an arithmetic number, because the mean of its divisors is an integer number (92539440).

Almost surely, 2^722238739 is an apocalyptic number.

722238739 is a deficient number, since it is larger than the sum of its proper divisors (18076781).

722238739 is a wasteful number, since it uses less digits than its factorization.

722238739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021.

The product of its digits is 254016, while the sum is 43.

The square root of 722238739 is about 26874.4997906938. The cubic root of 722238739 is about 897.2089414491.

The spelling of 722238739 in words is "seven hundred twenty-two million, two hundred thirty-eight thousand, seven hundred thirty-nine".