47638859 has 4 divisors (see below), whose sum is σ = 47716440. Its totient is φ = 47561280.

The previous prime is 47638853. The next prime is 47638867. The reversal of 47638859 is 95883674.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47638859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47638853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37862 + ... + 39099.

It is an arithmetic number, because the mean of its divisors is an integer number (11929110).

Almost surely, 2^47638859 is an apocalyptic number.

47638859 is a deficient number, since it is larger than the sum of its proper divisors (77581).

47638859 is an equidigital number, since it uses as much as digits as its factorization.

47638859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580.

The product of its digits is 1451520, while the sum is 50.

The square root of 47638859 is about 6902.0909150778. The cubic root of 47638859 is about 362.5103832143.

The spelling of 47638859 in words is "forty-seven million, six hundred thirty-eight thousand, eight hundred fifty-nine".