47717808 has 40 divisors (see below), whose sum is σ = 125603568. Its totient is φ = 15604992.

The previous prime is 47717807. The next prime is 47717819. The reversal of 47717808 is 80871774.

It is a self number, because there is not a number n which added to its sum of digits gives 47717808.

It is not an unprimeable number, because it can be changed into a prime (47717807) 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, 6835 + ... + 11922.

Almost surely, 2^47717808 is an apocalyptic number.

47717808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47717808 is an abundant number, since it is smaller than the sum of its proper divisors (77885760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47717808 is a wasteful number, since it uses less digits than its factorization.

47717808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18821 (or 18815 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 47717808 is about 6907.8077564449. The cubic root of 47717808 is about 362.7105282038.

The spelling of 47717808 in words is "forty-seven million, seven hundred seventeen thousand, eight hundred eight".