47444657 has 8 divisors (see below), whose sum is σ = 51158184. Its totient is φ = 43740288.

The previous prime is 47444651. The next prime is 47444681. The reversal of 47444657 is 75644474.

It can be written as a sum of positive squares in 4 ways, for example, as 18241441 + 29203216 = 4271^2 + 5404^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47444657 - 2²² = 43250353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47444651) 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, 11663 + ... + 15195.

It is an arithmetic number, because the mean of its divisors is an integer number (6394773).

Almost surely, 2^47444657 is an apocalyptic number.

It is an amenable number.

47444657 is a deficient number, since it is larger than the sum of its proper divisors (3713527).

47444657 is a wasteful number, since it uses less digits than its factorization.

47444657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579.

The product of its digits is 376320, while the sum is 41.

The square root of 47444657 is about 6888.0082026664. The cubic root of 47444657 is about 362.0171155791.

The spelling of 47444657 in words is "forty-seven million, four hundred forty-four thousand, six hundred fifty-seven".