473189809 has 4 divisors (see below), whose sum is σ = 473512960. Its totient is φ = 472866660.

The previous prime is 473189807. The next prime is 473189831. The reversal of 473189809 is 908981374.

It is a happy number.

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 473189809 - 2¹ = 473189807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (473189803) 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, 159369 + ... + 162310.

It is an arithmetic number, because the mean of its divisors is an integer number (118378240).

Almost surely, 2^473189809 is an apocalyptic number.

It is an amenable number.

473189809 is a deficient number, since it is larger than the sum of its proper divisors (323151).

473189809 is a wasteful number, since it uses less digits than its factorization.

473189809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323150.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 473189809 is about 21752.9264468025. The cubic root of 473189809 is about 779.2529605182.

The spelling of 473189809 in words is "four hundred seventy-three million, one hundred eighty-nine thousand, eight hundred nine".