47916979 has 16 divisors (see below), whose sum is σ = 54641664. Its totient is φ = 41623200.

The previous prime is 47916971. The next prime is 47916989. The reversal of 47916979 is 97961974.

It is a cyclic number.

It is not a de Polignac number, because 47916979 - 2³ = 47916971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47916971) 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, 27457 + ... + 29149.

It is an arithmetic number, because the mean of its divisors is an integer number (3415104).

Almost surely, 2^47916979 is an apocalyptic number.

47916979 is a deficient number, since it is larger than the sum of its proper divisors (6724685).

47916979 is a wasteful number, since it uses less digits than its factorization.

47916979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its digits is 857304, while the sum is 52.

The square root of 47916979 is about 6922.2091127038. The cubic root of 47916979 is about 363.2144710276.

The spelling of 47916979 in words is "forty-seven million, nine hundred sixteen thousand, nine hundred seventy-nine".