47917717 has 8 divisors (see below), whose sum is σ = 50078016. Its totient is φ = 45763872.

The previous prime is 47917697. The next prime is 47917741. The reversal of 47917717 is 71771974.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47917717 - 2²³ = 39529109 is a prime.

It is a super-2 number, since 2×47917717² = 4592215204984178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47917117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19713 + ... + 22009.

It is an arithmetic number, because the mean of its divisors is an integer number (6259752).

Almost surely, 2^47917717 is an apocalyptic number.

It is an amenable number.

47917717 is a deficient number, since it is larger than the sum of its proper divisors (2160299).

47917717 is a wasteful number, since it uses less digits than its factorization.

47917717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227.

The product of its digits is 86436, while the sum is 43.

The square root of 47917717 is about 6922.2624191806. The cubic root of 47917717 is about 363.2163357174.

It can be divided in two parts, 47 and 917717, that added together give a square (917764 = 958²).

The spelling of 47917717 in words is "forty-seven million, nine hundred seventeen thousand, seven hundred seventeen".