276409908009 has 27 divisors (see below), whose sum is σ = 401976768037. Its totient is φ = 183027251616.

The previous prime is 276409907989. The next prime is 276409908013. The reversal of 276409908009 is 900809904672.

The square root of 276409908009 is 525747.

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

276409908009 is a `hidden beast` number, since 2 + 76 + 409 + 90 + 80 + 0 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18386546409 + 258023361600 = 135597^2 + 507960^2 .

It is not a de Polignac number, because 276409908009 - 2¹³ = 276409899817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276409908029) 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 26 ways as a sum of consecutive naturals, for example, 272862187 + ... + 272863199.

Almost surely, 2^276409908009 is an apocalyptic number.

276409908009 is the 525747-th square number.

276409908009 is the 262874-th centered octagonal number.

It is an amenable number.

276409908009 is a deficient number, since it is larger than the sum of its proper divisors (125566860028).

276409908009 is an frugal number, since it uses more digits than its factorization.

276409908009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 276409908009 in words is "two hundred seventy-six billion, four hundred nine million, nine hundred eight thousand, nine".