798821748 has 18 divisors (see below), whose sum is σ = 2019243954. Its totient is φ = 266273904.

The previous prime is 798821743. The next prime is 798821773. The reversal of 798821748 is 847128897.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 787812624 + 11009124 = 28068^2 + 3318^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 798821694 and 798821703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798821743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11094711 + ... + 11094782.

Almost surely, 2^798821748 is an apocalyptic number.

It is an amenable number.

798821748 is an abundant number, since it is smaller than the sum of its proper divisors (1220422206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

798821748 is a wasteful number, since it uses less digits than its factorization.

798821748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22189503 (or 22189498 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The square root of 798821748 is about 28263.4348231067. The cubic root of 798821748 is about 927.8617960185.

The spelling of 798821748 in words is "seven hundred ninety-eight million, eight hundred twenty-one thousand, seven hundred forty-eight".