276836979409 has 15 divisors (see below), whose sum is σ = 284667372615. Its totient is φ = 269221967040.

The previous prime is 276836979347. The next prime is 276836979443. The reversal of 276836979409 is 904979638672.

The square root of 276836979409 is 526153.

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

It can be written as a sum of positive squares in 7 ways, for example, as 68966638225 + 207870341184 = 262615^2 + 455928^2 .

It is not a de Polignac number, because 276836979409 - 2²¹ = 276834882257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276836979469) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 884463037 + ... + 884463349.

It is an arithmetic number, because the mean of its divisors is an integer number (18977824841).

Almost surely, 2^276836979409 is an apocalyptic number.

276836979409 is the 526153-rd square number.

276836979409 is the 263077-th centered octagonal number.

It is an amenable number.

276836979409 is a deficient number, since it is larger than the sum of its proper divisors (7830393206).

276836979409 is an frugal number, since it uses more digits than its factorization.

276836979409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 70.

The spelling of 276836979409 in words is "two hundred seventy-six billion, eight hundred thirty-six million, nine hundred seventy-nine thousand, four hundred nine".