47985894 has 96 divisors (see below), whose sum is σ = 120126240. Its totient is φ = 13708800.

The previous prime is 47985877. The next prime is 47985907. The reversal of 47985894 is 49858974.

47985894 is a `hidden beast` number, since 479 + 85 + 8 + 94 = 666.

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 47985894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 350194 + ... + 350330.

It is an arithmetic number, because the mean of its divisors is an integer number (1251315).

Almost surely, 2^47985894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47985894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60063120).

47985894 is an abundant number, since it is smaller than the sum of its proper divisors (72140346).

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

47985894 is a wasteful number, since it uses less digits than its factorization.

47985894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 47985894 is about 6927.1851426102. The cubic root of 47985894 is about 363.3885146576.

Subtracting 47985894 from its reverse (49858974), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 47985894 in words is "forty-seven million, nine hundred eighty-five thousand, eight hundred ninety-four".