49994609842 has 4 divisors (see below), whose sum is σ = 74991914766. Its totient is φ = 24997304920.

The previous prime is 49994609771. The next prime is 49994609879. The reversal of 49994609842 is 24890649994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41636810601 + 8357799241 = 204051^2 + 91421^2 .

It is a super-2 number, since 2×49994609842² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12498652459 + ... + 12498652462.

Almost surely, 2^49994609842 is an apocalyptic number.

49994609842 is a deficient number, since it is larger than the sum of its proper divisors (24997304924).

49994609842 is a wasteful number, since it uses less digits than its factorization.

49994609842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24997304923.

The product of its (nonzero) digits is 40310784, while the sum is 64.

The spelling of 49994609842 in words is "forty-nine billion, nine hundred ninety-four million, six hundred nine thousand, eight hundred forty-two".