47638973 has 4 divisors (see below), whose sum is σ = 48110748. Its totient is φ = 47167200.

The previous prime is 47638961. The next prime is 47638979. The reversal of 47638973 is 37983674.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45670564 + 1968409 = 6758^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 47638973 - 2¹⁸ = 47376829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47638979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235736 + ... + 235937.

It is an arithmetic number, because the mean of its divisors is an integer number (12027687).

Almost surely, 2^47638973 is an apocalyptic number.

It is an amenable number.

47638973 is a deficient number, since it is larger than the sum of its proper divisors (471775).

47638973 is a wasteful number, since it uses less digits than its factorization.

47638973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471774.

The product of its digits is 762048, while the sum is 47.

The square root of 47638973 is about 6902.0991734399. The cubic root of 47638973 is about 362.5106723770.

The spelling of 47638973 in words is "forty-seven million, six hundred thirty-eight thousand, nine hundred seventy-three".