47640884 has 6 divisors (see below), whose sum is σ = 83371554. Its totient is φ = 23820440.

The previous prime is 47640877. The next prime is 47640949. The reversal of 47640884 is 48804674.

It can be written as a sum of positive squares in only one way, i.e., 32741284 + 14899600 = 5722^2 + 3860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5955107 + ... + 5955114.

It is an arithmetic number, because the mean of its divisors is an integer number (13895259).

Almost surely, 2^47640884 is an apocalyptic number.

It is an amenable number.

47640884 is a deficient number, since it is larger than the sum of its proper divisors (35730670).

47640884 is a wasteful number, since it uses less digits than its factorization.

47640884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910225 (or 11910223 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 47640884 is about 6902.2376081963. The cubic root of 47640884 is about 362.5155195892.

The spelling of 47640884 in words is "forty-seven million, six hundred forty thousand, eight hundred eighty-four".