49938639 has 8 divisors (see below), whose sum is σ = 70501680. Its totient is φ = 31334016.

The previous prime is 49938583. The next prime is 49938739. The reversal of 49938639 is 93683994.

49938639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 49938639 - 2⁹ = 49938127 is a prime.

It is a super-3 number, since 3×49938639³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 979189 = 49938639 / (4 + 9 + 9 + 3 + 8 + 6 + 3 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 49938591 and 49938600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49938139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489544 + ... + 489645.

It is an arithmetic number, because the mean of its divisors is an integer number (8812710).

Almost surely, 2^49938639 is an apocalyptic number.

49938639 is a deficient number, since it is larger than the sum of its proper divisors (20563041).

49938639 is a wasteful number, since it uses less digits than its factorization.

49938639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979209.

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

The square root of 49938639 is about 7066.7276019385. The cubic root of 49938639 is about 368.2523842685.

The spelling of 49938639 in words is "forty-nine million, nine hundred thirty-eight thousand, six hundred thirty-nine".