49999705676209 has 3 divisors (see below), whose sum is σ = 49999712747257. Its totient is φ = 49999698605162.

The previous prime is 49999705676149. The next prime is 49999705676243. The reversal of 49999705676209 is 90267650799994.

The square root of 49999705676209 is 7071047.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 49999705676209 - 2²¹ = 49999703579057 is a prime.

It is a super-2 number, since 2×49999705676209² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49999705676299) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3535524 + ... + 10606570.

Almost surely, 2^{49999705676209} is an apocalyptic number.

49999705676209 is the 7071047-th square number.

49999705676209 is the 3535524-th centered octagonal number.

It is an amenable number.

49999705676209 is a deficient number, since it is larger than the sum of its proper divisors (7071048).

49999705676209 is an frugal number, since it uses more digits than its factorization.

49999705676209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14142094 (or 7071047 counting only the distinct ones).

The product of its (nonzero) digits is 4166497440, while the sum is 82.

The spelling of 49999705676209 in words is "forty-nine trillion, nine hundred ninety-nine billion, seven hundred five million, six hundred seventy-six thousand, two hundred nine".