472223917 has 6 divisors (see below), whose sum is σ = 519056174. Its totient is φ = 429294360.

The previous prime is 472223903. The next prime is 472223923. The reversal of 472223917 is 719322274.

It can be written as a sum of positive squares in only one way, i.e., 339075396 + 133148521 = 18414^2 + 11539^2 .

It is not a de Polignac number, because 472223917 - 2⁷ = 472223789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472223987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1951218 + ... + 1951459.

Almost surely, 2^472223917 is an apocalyptic number.

It is an amenable number.

472223917 is a deficient number, since it is larger than the sum of its proper divisors (46832257).

472223917 is a wasteful number, since it uses less digits than its factorization.

472223917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902699 (or 3902688 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 472223917 is about 21730.7136790304. The cubic root of 472223917 is about 778.7223863199.

The spelling of 472223917 in words is "four hundred seventy-two million, two hundred twenty-three thousand, nine hundred seventeen".