47814779 has 2 divisors, whose sum is σ = 47814780. Its totient is φ = 47814778.

The previous prime is 47814731. The next prime is 47814787. The reversal of 47814779 is 97741874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47814779 is a prime.

It is not a weakly prime, because it can be changed into another prime (47814719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23907389 + 23907390.

It is an arithmetic number, because the mean of its divisors is an integer number (23907390).

Almost surely, 2^47814779 is an apocalyptic number.

47814779 is a deficient number, since it is larger than the sum of its proper divisors (1).

47814779 is an equidigital number, since it uses as much as digits as its factorization.

47814779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 47.

The square root of 47814779 is about 6914.8231358438. The cubic root of 47814779 is about 362.9560592083.

The spelling of 47814779 in words is "forty-seven million, eight hundred fourteen thousand, seven hundred seventy-nine".