47230809 has 4 divisors (see below), whose sum is σ = 62974416. Its totient is φ = 31487204.

The previous prime is 47230801. The next prime is 47230819. The reversal of 47230809 is 90803274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47230809 - 2³ = 47230801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47230809.

It is not an unprimeable number, because it can be changed into a prime (47230801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7871799 + ... + 7871804.

It is an arithmetic number, because the mean of its divisors is an integer number (15743604).

Almost surely, 2^47230809 is an apocalyptic number.

It is an amenable number.

47230809 is a deficient number, since it is larger than the sum of its proper divisors (15743607).

47230809 is a wasteful number, since it uses less digits than its factorization.

47230809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15743606.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 47230809 is about 6872.4674608178. The cubic root of 47230809 is about 361.4723879822.

The spelling of 47230809 in words is "forty-seven million, two hundred thirty thousand, eight hundred nine".