49993638 has 16 divisors (see below), whose sum is σ = 103213056. Its totient is φ = 16126920.

The previous prime is 49993633. The next prime is 49993663. The reversal of 49993638 is 83639994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49993633) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 134206 + ... + 134577.

It is an arithmetic number, because the mean of its divisors is an integer number (6450816).

Almost surely, 2^49993638 is an apocalyptic number.

49993638 is an abundant number, since it is smaller than the sum of its proper divisors (53219418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49993638 is a wasteful number, since it uses less digits than its factorization.

49993638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268819.

The product of its digits is 1259712, while the sum is 51.

The square root of 49993638 is about 7070.6179362203. The cubic root of 49993638 is about 368.3875239957.

The spelling of 49993638 in words is "forty-nine million, nine hundred ninety-three thousand, six hundred thirty-eight".