47137447 has 16 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 37715328.

The previous prime is 47137439. The next prime is 47137451. The reversal of 47137447 is 74473174.

It is not a de Polignac number, because 47137447 - 2³ = 47137439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47137427) 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, 13554 + ... + 16672.

It is an arithmetic number, because the mean of its divisors is an integer number (3594240).

Almost surely, 2^47137447 is an apocalyptic number.

47137447 is a deficient number, since it is larger than the sum of its proper divisors (10370393).

47137447 is a wasteful number, since it uses less digits than its factorization.

47137447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270.

The product of its digits is 65856, while the sum is 37.

The square root of 47137447 is about 6865.6716350260. The cubic root of 47137447 is about 361.2340545238.

The spelling of 47137447 in words is "forty-seven million, one hundred thirty-seven thousand, four hundred forty-seven".