47904009 has 8 divisors (see below), whose sum is σ = 66649152. Its totient is φ = 30547440.

The previous prime is 47903993. The next prime is 47904013. The reversal of 47904009 is 90040974.

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

It is not a de Polignac number, because 47904009 - 2⁴ = 47903993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47904049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347062 + ... + 347199.

It is an arithmetic number, because the mean of its divisors is an integer number (8331144).

Almost surely, 2^47904009 is an apocalyptic number.

It is an amenable number.

47904009 is a deficient number, since it is larger than the sum of its proper divisors (18745143).

47904009 is a wasteful number, since it uses less digits than its factorization.

47904009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694287.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 47904009 is about 6921.2722096447. The cubic root of 47904009 is about 363.1816968635.

The spelling of 47904009 in words is "forty-seven million, nine hundred four thousand, nine".