47768309 has 8 divisors (see below), whose sum is σ = 50906880. Its totient is φ = 44718256.

The previous prime is 47768293. The next prime is 47768311. The reversal of 47768309 is 90386774.

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

It is not a de Polignac number, because 47768309 - 2⁴ = 47768293 is a prime.

It is a super-2 number, since 2×47768309² = 4563622689438962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47768309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47768389) 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, 21014 + ... + 23175.

It is an arithmetic number, because the mean of its divisors is an integer number (6363360).

Almost surely, 2^47768309 is an apocalyptic number.

It is an amenable number.

47768309 is a deficient number, since it is larger than the sum of its proper divisors (3138571).

47768309 is a wasteful number, since it uses less digits than its factorization.

47768309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44259.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 47768309 is about 6911.4621463190. The cubic root of 47768309 is about 362.8384384263.

It can be divided in two parts, 477 and 68309, that added together give a palindrome (68786).

The spelling of 47768309 in words is "forty-seven million, seven hundred sixty-eight thousand, three hundred nine".