47439756 has 120 divisors (see below), whose sum is σ = 152731040. Its totient is φ = 12503808.

The previous prime is 47439697. The next prime is 47439757. The reversal of 47439756 is 65793474.

It is not an unprimeable number, because it can be changed into a prime (47439757) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28680 + ... + 30288.

Almost surely, 2^47439756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47439756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76365520).

47439756 is an abundant number, since it is smaller than the sum of its proper divisors (105291284).

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

47439756 is a wasteful number, since it uses less digits than its factorization.

47439756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1634 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 47439756 is about 6887.6524302552. The cubic root of 47439756 is about 362.0046497780.

The spelling of 47439756 in words is "forty-seven million, four hundred thirty-nine thousand, seven hundred fifty-six".