472805491 has 4 divisors (see below), whose sum is σ = 472991400. Its totient is φ = 472619584.

The previous prime is 472805407. The next prime is 472805569. The reversal of 472805491 is 194508274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 472805491 - 2⁷ = 472805363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472805791) 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, 89086 + ... + 94243.

It is an arithmetic number, because the mean of its divisors is an integer number (118247850).

Almost surely, 2^472805491 is an apocalyptic number.

472805491 is a deficient number, since it is larger than the sum of its proper divisors (185909).

472805491 is a wasteful number, since it uses less digits than its factorization.

472805491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185908.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 472805491 is about 21744.0909444382. The cubic root of 472805491 is about 779.0419373387.

The spelling of 472805491 in words is "four hundred seventy-two million, eight hundred five thousand, four hundred ninety-one".