47024209 has 2 divisors, whose sum is σ = 47024210. Its totient is φ = 47024208.

The previous prime is 47024207. The next prime is 47024249. The reversal of 47024209 is 90242074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 19775809 = 5220^2 + 4447^2 .

It is a cyclic number.

It is not a de Polignac number, because 47024209 - 2¹ = 47024207 is a prime.

It is a super-2 number, since 2×47024209² = 4422552464151362, which contains 22 as substring.

Together with 47024207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47024203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23512104 + 23512105.

It is an arithmetic number, because the mean of its divisors is an integer number (23512105).

Almost surely, 2^47024209 is an apocalyptic number.

It is an amenable number.

47024209 is a deficient number, since it is larger than the sum of its proper divisors (1).

47024209 is an equidigital number, since it uses as much as digits as its factorization.

47024209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 47024209 is about 6857.4199958877. The cubic root of 47024209 is about 360.9445591306.

It can be divided in two parts, 4702 and 4209, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 47024209 in words is "forty-seven million, twenty-four thousand, two hundred nine".