49403638 has 4 divisors (see below), whose sum is σ = 74105460. Its totient is φ = 24701818.

The previous prime is 49403623. The next prime is 49403657. The reversal of 49403638 is 83630494.

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 = 49403597 and 49403606.

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, 12350908 + ... + 12350911.

It is an arithmetic number, because the mean of its divisors is an integer number (18526365).

Almost surely, 2^49403638 is an apocalyptic number.

49403638 is a deficient number, since it is larger than the sum of its proper divisors (24701822).

49403638 is a wasteful number, since it uses less digits than its factorization.

49403638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24701821.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 49403638 is about 7028.7721545089. The cubic root of 49403638 is about 366.9326101865.

The spelling of 49403638 in words is "forty-nine million, four hundred three thousand, six hundred thirty-eight".