50879639 has 4 divisors (see below), whose sum is σ = 50897040. Its totient is φ = 50862240.

The previous prime is 50879627. The next prime is 50879641. The reversal of 50879639 is 93697805.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93697805 = 5 ⋅18739561.

It is a cyclic number.

It is not a de Polignac number, because 50879639 - 2⁸ = 50879383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50879593 and 50879602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50879039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3122 + ... + 10559.

It is an arithmetic number, because the mean of its divisors is an integer number (12724260).

Almost surely, 2^50879639 is an apocalyptic number.

50879639 is a deficient number, since it is larger than the sum of its proper divisors (17401).

50879639 is a wasteful number, since it uses less digits than its factorization.

50879639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17400.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 50879639 is about 7132.9964951625. The cubic root of 50879639 is about 370.5510148950.

The spelling of 50879639 in words is "fifty million, eight hundred seventy-nine thousand, six hundred thirty-nine".