47254809 has 32 divisors (see below), whose sum is σ = 75241216. Its totient is φ = 25816320.

The previous prime is 47254799. The next prime is 47254813. The reversal of 47254809 is 90845274.

It is not a de Polignac number, because 47254809 - 2⁴ = 47254793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47254829) 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 in 31 ways as a sum of consecutive naturals, for example, 46899 + ... + 47895.

It is an arithmetic number, because the mean of its divisors is an integer number (2351288).

Almost surely, 2^47254809 is an apocalyptic number.

It is an amenable number.

47254809 is a deficient number, since it is larger than the sum of its proper divisors (27986407).

47254809 is a wasteful number, since it uses less digits than its factorization.

47254809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 47254809 is about 6874.2133368117. The cubic root of 47254809 is about 361.5336041564.

The spelling of 47254809 in words is "forty-seven million, two hundred fifty-four thousand, eight hundred nine".