820726383 has 4 divisors (see below), whose sum is σ = 1094301848. Its totient is φ = 547150920.

The previous prime is 820726381. The next prime is 820726393. The reversal of 820726383 is 383627028.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 820726383 - 2¹ = 820726381 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 (820726381) 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 3 ways as a sum of consecutive naturals, for example, 136787728 + ... + 136787733.

It is an arithmetic number, because the mean of its divisors is an integer number (273575462).

Almost surely, 2^820726383 is an apocalyptic number.

820726383 is a deficient number, since it is larger than the sum of its proper divisors (273575465).

820726383 is a wasteful number, since it uses less digits than its factorization.

820726383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273575464.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 820726383 is about 28648.3225163359. The cubic root of 820726383 is about 936.2664577146.

The spelling of 820726383 in words is "eight hundred twenty million, seven hundred twenty-six thousand, three hundred eighty-three".