47924309 has 8 divisors (see below), whose sum is σ = 50810328. Its totient is φ = 45045760.

The previous prime is 47924291. The next prime is 47924321. The reversal of 47924309 is 90342974.

47924309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19802500 + 28121809 = 4450^2 + 5303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47924309 - 2⁸ = 47924053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47924609) 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 7 ways as a sum of consecutive naturals, for example, 16709 + ... + 19365.

It is an arithmetic number, because the mean of its divisors is an integer number (6351291).

Almost surely, 2^47924309 is an apocalyptic number.

It is an amenable number.

47924309 is a deficient number, since it is larger than the sum of its proper divisors (2886019).

47924309 is a wasteful number, since it uses less digits than its factorization.

47924309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 47924309 is about 6922.7385477136. The cubic root of 47924309 is about 363.2329907422.

The spelling of 47924309 in words is "forty-seven million, nine hundred twenty-four thousand, three hundred nine".