49473639 has 16 divisors (see below), whose sum is σ = 73455840. Its totient is φ = 32909760.

The previous prime is 49473629. The next prime is 49473643. The reversal of 49473639 is 93637494.

49473639 is a `hidden beast` number, since 4 + 9 + 4 + 7 + 3 + 639 = 666.

It is not a de Polignac number, because 49473639 - 2¹² = 49469543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49473594 and 49473603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49473629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12309 + ... + 15825.

It is an arithmetic number, because the mean of its divisors is an integer number (4590990).

Almost surely, 2^49473639 is an apocalyptic number.

49473639 is a deficient number, since it is larger than the sum of its proper divisors (23982201).

49473639 is a wasteful number, since it uses less digits than its factorization.

49473639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047 (or 4041 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 49473639 is about 7033.7499955571. The cubic root of 49473639 is about 367.1058331091.

The spelling of 49473639 in words is "forty-nine million, four hundred seventy-three thousand, six hundred thirty-nine".