49975943809 has 9 divisors (see below), whose sum is σ = 54934938849. Its totient is φ = 45430440660.

The previous prime is 49975943767. The next prime is 49975943813. The reversal of 49975943809 is 90834957994.

The square root of 49975943809 is 223553.

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

It is not a de Polignac number, because 49975943809 - 2¹¹ = 49975941761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49975943869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2448922 + ... + 2469244.

Almost surely, 2^49975943809 is an apocalyptic number.

49975943809 is the 223553-rd square number.

49975943809 is the 111777-th centered octagonal number.

It is an amenable number.

49975943809 is a deficient number, since it is larger than the sum of its proper divisors (4958995040).

49975943809 is an frugal number, since it uses more digits than its factorization.

49975943809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40668 (or 20334 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 67.

The spelling of 49975943809 in words is "forty-nine billion, nine hundred seventy-five million, nine hundred forty-three thousand, eight hundred nine".