838860805 has 4 divisors (see below), whose sum is σ = 1006632972. Its totient is φ = 671088640.

The previous prime is 838860791. The next prime is 838860817. The reversal of 838860805 is 508068838.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 455993316 + 382867489 = 21354^2 + 19567^2 .

It is not a de Polignac number, because 838860805 - 2¹³ = 838852613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83886076 + ... + 83886085.

It is an arithmetic number, because the mean of its divisors is an integer number (251658243).

Almost surely, 2^838860805 is an apocalyptic number.

It is an amenable number.

838860805 is a deficient number, since it is larger than the sum of its proper divisors (167772167).

838860805 is a wasteful number, since it uses less digits than its factorization.

838860805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167772166.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 838860805 is about 28963.0938437177. The cubic root of 838860805 is about 943.1120655257.

It can be divided in two parts, 83886080 and 5, that multiplied together give a square (419430400 = 20480²).

The spelling of 838860805 in words is "eight hundred thirty-eight million, eight hundred sixty thousand, eight hundred five".