47744 has 16 divisors (see below), whose sum is σ = 95370. Its totient is φ = 23808.

The previous prime is 47743. The next prime is 47777. The reversal of 47744 is 44774.

47744 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 40000 + 7744 = 200^2 + 88^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (47741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59 + ... + 314.

2⁴⁷⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

47744 is a deficient number, since it is larger than the sum of its proper divisors (47626).

47744 is an equidigital number, since it uses as much as digits as its factorization.

47744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 375 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 47744 is about 218.5040045400. The cubic root of 47744 is about 36.2776879229.

It can be divided in two parts, 4 and 7744, that multiplied together give a square (30976 = 176²).

The spelling of 47744 in words is "forty-seven thousand, seven hundred forty-four", and thus it is an iban number.