47047940 has 24 divisors (see below), whose sum is σ = 100904832. Its totient is φ = 18418400.

The previous prime is 47047939. The next prime is 47047943. The reversal of 47047940 is 4974074.

It is a self number, because there is not a number n which added to its sum of digits gives 47047940.

It is not an unprimeable number, because it can be changed into a prime (47047943) 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, 24086 + ... + 25965.

It is an arithmetic number, because the mean of its divisors is an integer number (4204368).

Almost surely, 2^47047940 is an apocalyptic number.

It is an amenable number.

47047940 is an abundant number, since it is smaller than the sum of its proper divisors (53856892).

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

47047940 is a wasteful number, since it uses less digits than its factorization.

47047940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50107 (or 50105 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 47047940 is about 6859.1500931238. The cubic root of 47047940 is about 361.0052664062.

The spelling of 47047940 in words is "forty-seven million, forty-seven thousand, nine hundred forty".