47679621 has 16 divisors (see below), whose sum is σ = 72368640. Its totient is φ = 27639920.

The previous prime is 47679617. The next prime is 47679623. The reversal of 47679621 is 12697674.

It is not a de Polignac number, because 47679621 - 2² = 47679617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47679623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30651 + ... + 32168.

It is an arithmetic number, because the mean of its divisors is an integer number (4523040).

Almost surely, 2^47679621 is an apocalyptic number.

It is an amenable number.

47679621 is a deficient number, since it is larger than the sum of its proper divisors (24689019).

47679621 is a wasteful number, since it uses less digits than its factorization.

47679621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62856.

The product of its digits is 127008, while the sum is 42.

The square root of 47679621 is about 6905.0431569976. The cubic root of 47679621 is about 362.6137472608.

The spelling of 47679621 in words is "forty-seven million, six hundred seventy-nine thousand, six hundred twenty-one".