47949311 has 2 divisors, whose sum is σ = 47949312. Its totient is φ = 47949310.

The previous prime is 47949289. The next prime is 47949313. The reversal of 47949311 is 11394974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47949311 - 2¹⁰ = 47948287 is a prime.

It is a Sophie Germain prime.

Together with 47949313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47949313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23974655 + 23974656.

It is an arithmetic number, because the mean of its divisors is an integer number (23974656).

Almost surely, 2^47949311 is an apocalyptic number.

47949311 is a deficient number, since it is larger than the sum of its proper divisors (1).

47949311 is an equidigital number, since it uses as much as digits as its factorization.

47949311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 47949311 is about 6924.5441005167. The cubic root of 47949311 is about 363.2961456950.

The spelling of 47949311 in words is "forty-seven million, nine hundred forty-nine thousand, three hundred eleven".