47909297 has 4 divisors (see below), whose sum is σ = 48813300. Its totient is φ = 47005296.

The previous prime is 47909273. The next prime is 47909321. The reversal of 47909297 is 79290974.

47909297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (47909273) and next prime (47909321).

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 18054001 = 5464^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 47909297 - 2¹⁴ = 47892913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47902297) 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 3 ways as a sum of consecutive naturals, for example, 451922 + ... + 452027.

It is an arithmetic number, because the mean of its divisors is an integer number (12203325).

Almost surely, 2^47909297 is an apocalyptic number.

It is an amenable number.

47909297 is a deficient number, since it is larger than the sum of its proper divisors (904003).

47909297 is an equidigital number, since it uses as much as digits as its factorization.

47909297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904002.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 47909297 is about 6921.6542097970. The cubic root of 47909297 is about 363.1950599354.

The spelling of 47909297 in words is "forty-seven million, nine hundred nine thousand, two hundred ninety-seven".