722534399 has 4 divisors (see below), whose sum is σ = 722588160. Its totient is φ = 722480640.

The previous prime is 722534387. The next prime is 722534401. The reversal of 722534399 is 993435227.

It is a Cunningham number, because it is equal to 26880²-1.

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 not a de Polignac number, because 722534399 - 2⁴ = 722534383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722534359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13439 + ... + 40319.

It is an arithmetic number, because the mean of its divisors is an integer number (180647040).

Almost surely, 2^722534399 is an apocalyptic number.

722534399 is a deficient number, since it is larger than the sum of its proper divisors (53761).

722534399 is a wasteful number, since it uses less digits than its factorization.

722534399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53760.

The product of its digits is 408240, while the sum is 44.

The square root of 722534399 is about 26879.9999813988. Note that the first 4 decimals coincide. The cubic root of 722534399 is about 897.3313536987.

The spelling of 722534399 in words is "seven hundred twenty-two million, five hundred thirty-four thousand, three hundred ninety-nine".