47751979 has 16 divisors (see below), whose sum is σ = 54722304. Its totient is φ = 41245600.

The previous prime is 47751937. The next prime is 47751983. The reversal of 47751979 is 97915774.

47751979 = 437² + 438² + ... + 609².

47751979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47751979 - 2⁹ = 47751467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47751679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43224 + ... + 44314.

It is an arithmetic number, because the mean of its divisors is an integer number (3420144).

Almost surely, 2^47751979 is an apocalyptic number.

47751979 is a deficient number, since it is larger than the sum of its proper divisors (6970325).

47751979 is a wasteful number, since it uses less digits than its factorization.

47751979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 555660, while the sum is 49.

The square root of 47751979 is about 6910.2806744734. The cubic root of 47751979 is about 362.7970872520.

The spelling of 47751979 in words is "forty-seven million, seven hundred fifty-one thousand, nine hundred seventy-nine".