50894006409 has 27 divisors (see below), whose sum is σ = 74183366439. Its totient is φ = 33622976880.

The previous prime is 50894006399. The next prime is 50894006413. The reversal of 50894006409 is 90460049805.

It is a happy number.

The square root of 50894006409 is 225597.

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

It can be written as a sum of positive squares in only one way, i.e., 20219986809 + 30674019600 = 142197^2 + 175140^2 .

It is not a de Polignac number, because 50894006409 - 2³⁵ = 16534268041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50894006459) 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, 94073679 + ... + 94074219.

Almost surely, 2^50894006409 is an apocalyptic number.

50894006409 is the 225597-th square number.

50894006409 is the 112799-th centered octagonal number.

It is an amenable number.

50894006409 is a deficient number, since it is larger than the sum of its proper divisors (23289360030).

50894006409 is an frugal number, since it uses more digits than its factorization.

50894006409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 50894006409 in words is "fifty billion, eight hundred ninety-four million, six thousand, four hundred nine".