49879571829 has 4 divisors (see below), whose sum is σ = 66506095776. Its totient is φ = 33253047884.

The previous prime is 49879571821. The next prime is 49879571831. The reversal of 49879571829 is 92817597894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49879571829 - 2³ = 49879571821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49879571821) 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, 8313261969 + ... + 8313261974.

It is an arithmetic number, because the mean of its divisors is an integer number (16626523944).

Almost surely, 2^49879571829 is an apocalyptic number.

It is an amenable number.

49879571829 is a deficient number, since it is larger than the sum of its proper divisors (16626523947).

49879571829 is a wasteful number, since it uses less digits than its factorization.

49879571829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16626523946.

The product of its digits is 91445760, while the sum is 69.

The spelling of 49879571829 in words is "forty-nine billion, eight hundred seventy-nine million, five hundred seventy-one thousand, eight hundred twenty-nine".