47689137 has 24 divisors (see below), whose sum is σ = 72095400. Its totient is φ = 30336768.

The previous prime is 47689123. The next prime is 47689139. The reversal of 47689137 is 73198674.

It can be written as a sum of positive squares in 4 ways, for example, as 2852721 + 44836416 = 1689^2 + 6696^2 .

It is not a de Polignac number, because 47689137 - 2⁴ = 47689121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47689092 and 47689101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47689139) 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, 22203 + ... + 24255.

It is an arithmetic number, because the mean of its divisors is an integer number (3003975).

Almost surely, 2^47689137 is an apocalyptic number.

It is an amenable number.

47689137 is a deficient number, since it is larger than the sum of its proper divisors (24406263).

47689137 is a wasteful number, since it uses less digits than its factorization.

47689137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2174 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 47689137 is about 6905.7321842076. The cubic root of 47689137 is about 362.6378693967.

The spelling of 47689137 in words is "forty-seven million, six hundred eighty-nine thousand, one hundred thirty-seven".