47639808 has 216 divisors, whose sum is σ = 153054720. Its totient is φ = 14192640.

The previous prime is 47639803. The next prime is 47639819. The reversal of 47639808 is 80893674.

It is a happy number.

47639808 is a `hidden beast` number, since 4 + 7 + 639 + 8 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47639803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1536753 + ... + 1536783.

Almost surely, 2^47639808 is an apocalyptic number.

47639808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47639808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76527360).

47639808 is an abundant number, since it is smaller than the sum of its proper divisors (105414912).

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

47639808 is a wasteful number, since it uses less digits than its factorization.

47639808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 47639808 is about 6902.1596620188. The cubic root of 47639808 is about 362.5127903533.

The spelling of 47639808 in words is "forty-seven million, six hundred thirty-nine thousand, eight hundred eight".