47332809 has 32 divisors (see below), whose sum is σ = 73075200. Its totient is φ = 30255120.

The previous prime is 47332801. The next prime is 47332823. The reversal of 47332809 is 90823374.

It is not a de Polignac number, because 47332809 - 2³ = 47332801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47332801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68154 + ... + 68844.

It is an arithmetic number, because the mean of its divisors is an integer number (2283600).

Almost surely, 2^47332809 is an apocalyptic number.

It is an amenable number.

47332809 is a deficient number, since it is larger than the sum of its proper divisors (25742391).

47332809 is a wasteful number, since it uses less digits than its factorization.

47332809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 47332809 is about 6879.8843740284. The cubic root of 47332809 is about 361.7324136904.

The spelling of 47332809 in words is "forty-seven million, three hundred thirty-two thousand, eight hundred nine".