49689818 has 8 divisors (see below), whose sum is σ = 77104980. Its totient is φ = 23988160.

The previous prime is 49689803. The next prime is 49689823. The reversal of 49689818 is 81898694.

It can be written as a sum of positive squares in 2 ways, for example, as 48622729 + 1067089 = 6973^2 + 1033^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 49689818.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428303 + ... + 428418.

Almost surely, 2^49689818 is an apocalyptic number.

49689818 is a deficient number, since it is larger than the sum of its proper divisors (27415162).

49689818 is a wasteful number, since it uses less digits than its factorization.

49689818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856752.

The product of its digits is 995328, while the sum is 53.

The square root of 49689818 is about 7049.1005099942. The cubic root of 49689818 is about 367.6397555677.

The spelling of 49689818 in words is "forty-nine million, six hundred eighty-nine thousand, eight hundred eighteen".