47928971 has 4 divisors (see below), whose sum is σ = 47947944. Its totient is φ = 47910000.

The previous prime is 47928943. The next prime is 47928973. The reversal of 47928971 is 17982974.

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

It is a cyclic number.

It is not a de Polignac number, because 47928971 - 2¹⁴ = 47912587 is a prime.

It is a super-2 number, since 2×47928971² = 4594372522237682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47928973) 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, 4985 + ... + 10986.

It is an arithmetic number, because the mean of its divisors is an integer number (11986986).

Almost surely, 2^47928971 is an apocalyptic number.

47928971 is a deficient number, since it is larger than the sum of its proper divisors (18973).

47928971 is a wasteful number, since it uses less digits than its factorization.

47928971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18972.

The product of its digits is 254016, while the sum is 47.

The square root of 47928971 is about 6923.0752559827. The cubic root of 47928971 is about 363.2447686014.

The spelling of 47928971 in words is "forty-seven million, nine hundred twenty-eight thousand, nine hundred seventy-one".