47689539 has 12 divisors (see below), whose sum is σ = 67396104. Its totient is φ = 29891904.

The previous prime is 47689531. The next prime is 47689541. The reversal of 47689539 is 93598674.

It is not a de Polignac number, because 47689539 - 2³ = 47689531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 47689491 and 47689500.

It is not an unprimeable number, because it can be changed into a prime (47689531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48834 + ... + 49800.

It is an arithmetic number, because the mean of its divisors is an integer number (5616342).

Almost surely, 2^47689539 is an apocalyptic number.

47689539 is a deficient number, since it is larger than the sum of its proper divisors (19706565).

47689539 is an frugal number, since it uses more digits than its factorization.

47689539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 987 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 47689539 is about 6905.7612904009. The cubic root of 47689539 is about 362.6388883570.

Multiplying 47689539 by its sum of digits (51), we get a square (2432166489 = 49317²).

47689539 divided by its sum of digits (51) gives a square (935089 = 967²).

The spelling of 47689539 in words is "forty-seven million, six hundred eighty-nine thousand, five hundred thirty-nine".