47447311 has 2 divisors, whose sum is σ = 47447312. Its totient is φ = 47447310.

The previous prime is 47447303. The next prime is 47447339. The reversal of 47447311 is 11374474.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47447311 - 2³ = 47447303 is a prime.

It is a super-2 number, since 2×47447311² = 4502494642261442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47447381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23723655 + 23723656.

It is an arithmetic number, because the mean of its divisors is an integer number (23723656).

Almost surely, 2^47447311 is an apocalyptic number.

47447311 is a deficient number, since it is larger than the sum of its proper divisors (1).

47447311 is an equidigital number, since it uses as much as digits as its factorization.

47447311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 47447311 is about 6888.2008536337. The cubic root of 47447311 is about 362.0238657281.

The spelling of 47447311 in words is "forty-seven million, four hundred forty-seven thousand, three hundred eleven".