49839492819 has 8 divisors (see below), whose sum is σ = 69950165440. Its totient is φ = 31477574376.

The previous prime is 49839492779. The next prime is 49839492821. The reversal of 49839492819 is 91829493894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49839492819 - 2²⁵ = 49805938387 is a prime.

It is a super-2 number, since 2×49839492819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49839492819.

It is not an unprimeable number, because it can be changed into a prime (49839492869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437188477 + ... + 437188590.

It is an arithmetic number, because the mean of its divisors is an integer number (8743770680).

Almost surely, 2^49839492819 is an apocalyptic number.

49839492819 is a deficient number, since it is larger than the sum of its proper divisors (20110672621).

49839492819 is a wasteful number, since it uses less digits than its factorization.

49839492819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874377089.

The product of its digits is 40310784, while the sum is 66.

The spelling of 49839492819 in words is "forty-nine billion, eight hundred thirty-nine million, four hundred ninety-two thousand, eight hundred nineteen".