472788809 has 4 divisors (see below), whose sum is σ = 477207504. Its totient is φ = 468370116.

The previous prime is 472788793. The next prime is 472788829. The reversal of 472788809 is 908887274.

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 472788809 - 2⁴ = 472788793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472788829) 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, 2209187 + ... + 2209400.

It is an arithmetic number, because the mean of its divisors is an integer number (119301876).

Almost surely, 2^472788809 is an apocalyptic number.

It is an amenable number.

472788809 is a deficient number, since it is larger than the sum of its proper divisors (4418695).

472788809 is a wasteful number, since it uses less digits than its factorization.

472788809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418694.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 472788809 is about 21743.7073425853. The cubic root of 472788809 is about 779.0327749166.

The spelling of 472788809 in words is "four hundred seventy-two million, seven hundred eighty-eight thousand, eight hundred nine".