47689971 has 16 divisors (see below), whose sum is σ = 75830784. Its totient is φ = 26066304.

The previous prime is 47689969. The next prime is 47689979. The reversal of 47689971 is 17998674.

It is not a de Polignac number, because 47689971 - 2¹ = 47689969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47689979) 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, 48886 + ... + 49851.

It is an arithmetic number, because the mean of its divisors is an integer number (4739424).

Almost surely, 2^47689971 is an apocalyptic number.

47689971 is a deficient number, since it is larger than the sum of its proper divisors (28140813).

47689971 is a wasteful number, since it uses less digits than its factorization.

47689971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98770.

The product of its digits is 762048, while the sum is 51.

The square root of 47689971 is about 6905.7925685616. The cubic root of 47689971 is about 362.6399833527.

The spelling of 47689971 in words is "forty-seven million, six hundred eighty-nine thousand, nine hundred seventy-one".