47981934 has 96 divisors (see below), whose sum is σ = 139636224. Its totient is φ = 11499840.

The previous prime is 47981917. The next prime is 47981957. The reversal of 47981934 is 43918974.

It is a self number, because there is not a number n which added to its sum of digits gives 47981934.

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, 16687 + ... + 19349.

It is an arithmetic number, because the mean of its divisors is an integer number (1454544).

Almost surely, 2^47981934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47981934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69818112).

47981934 is an abundant number, since it is smaller than the sum of its proper divisors (91654290).

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

47981934 is a wasteful number, since it uses less digits than its factorization.

47981934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2699 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 47981934 is about 6926.8993063275. The cubic root of 47981934 is about 363.3785182608.

The spelling of 47981934 in words is "forty-seven million, nine hundred eighty-one thousand, nine hundred thirty-four".