47317644 has 36 divisors (see below), whose sum is σ = 130483080. Its totient is φ = 14338560.

The previous prime is 47317637. The next prime is 47317679. The reversal of 47317644 is 44671374.

It is a happy number.

47317644 is a `hidden beast` number, since 4 + 7 + 3 + 1 + 7 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47317599 and 47317608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59349 + ... + 60140.

It is an arithmetic number, because the mean of its divisors is an integer number (3624530).

Almost surely, 2^47317644 is an apocalyptic number.

47317644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

47317644 is an abundant number, since it is smaller than the sum of its proper divisors (83165436).

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

47317644 is a wasteful number, since it uses less digits than its factorization.

47317644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119510 (or 119505 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 47317644 is about 6878.7821596559. The cubic root of 47317644 is about 361.6937776426.

It can be divided in two parts, 47317 and 644, that added together give a square (47961 = 219²).

The spelling of 47317644 in words is "forty-seven million, three hundred seventeen thousand, six hundred forty-four".