47747313 has 14 divisors (see below), whose sum is σ = 71589314. Its totient is φ = 31831056.

The previous prime is 47747303. The next prime is 47747317. The reversal of 47747313 is 31374774.

It can be written as a sum of positive squares in only one way, i.e., 40602384 + 7144929 = 6372^2 + 2673^2 .

It is not a de Polignac number, because 47747313 - 2⁹ = 47746801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47747317) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 32020 + ... + 33477.

Almost surely, 2^47747313 is an apocalyptic number.

It is an amenable number.

47747313 is a deficient number, since it is larger than the sum of its proper divisors (23842001).

47747313 is an frugal number, since it uses more digits than its factorization.

47747313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65515 (or 65500 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 47747313 is about 6909.9430533109. The cubic root of 47747313 is about 362.7852701756.

The spelling of 47747313 in words is "forty-seven million, seven hundred forty-seven thousand, three hundred thirteen".