47673639 has 24 divisors (see below), whose sum is σ = 74477312. Its totient is φ = 29211840.

The previous prime is 47673631. The next prime is 47673643. The reversal of 47673639 is 93637674.

47673639 is a `hidden beast` number, since 4 + 7 + 6 + 7 + 3 + 639 = 666.

It is not a de Polignac number, because 47673639 - 2³ = 47673631 is a prime.

Its product of digits (571536) is a multiple of the sum of its prime divisors (1764).

It is a junction number, because it is equal to n+sod(n) for n = 47673594 and 47673603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47673631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31674 + ... + 33144.

Almost surely, 2^47673639 is an apocalyptic number.

47673639 is a deficient number, since it is larger than the sum of its proper divisors (26803673).

47673639 is a wasteful number, since it uses less digits than its factorization.

47673639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1764 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 47673639 is about 6904.6099817441. The cubic root of 47673639 is about 362.5985818288.

The spelling of 47673639 in words is "forty-seven million, six hundred seventy-three thousand, six hundred thirty-nine".