49649638 has 4 divisors (see below), whose sum is σ = 74474460. Its totient is φ = 24824818.

The previous prime is 49649627. The next prime is 49649651. The reversal of 49649638 is 83694694.

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

It is a junction number, because it is equal to n+sod(n) for n = 49649591 and 49649600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12412408 + ... + 12412411.

It is an arithmetic number, because the mean of its divisors is an integer number (18618615).

Almost surely, 2^49649638 is an apocalyptic number.

49649638 is a deficient number, since it is larger than the sum of its proper divisors (24824822).

49649638 is a wasteful number, since it uses less digits than its factorization.

49649638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24824821.

The product of its digits is 1119744, while the sum is 49.

The square root of 49649638 is about 7046.2499246053. The cubic root of 49649638 is about 367.5406356720.

The spelling of 49649638 in words is "forty-nine million, six hundred forty-nine thousand, six hundred thirty-eight".