839920926784 has 63 divisors (see below), whose sum is σ = 1683751410621. Its totient is φ = 415711699200.

The previous prime is 839920926769. The next prime is 839920926809. The reversal of 839920926784 is 487629029938.

The square root of 839920926784 is 916472.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 585420856384 + 254500070400 = 765128^2 + 504480^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 799163059 + ... + 799164109.

It is an arithmetic number, because the mean of its divisors is an integer number (26726212867).

Almost surely, 2^839920926784 is an apocalyptic number.

839920926784 is the 916472-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 839920926784

839920926784 is an abundant number, since it is smaller than the sum of its proper divisors (843830483837).

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

839920926784 is an frugal number, since it uses more digits than its factorization.

839920926784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 839920926784 in words is "eight hundred thirty-nine billion, nine hundred twenty million, nine hundred twenty-six thousand, seven hundred eighty-four".