472501009 has 4 divisors (see below), whose sum is σ = 500295204. Its totient is φ = 444706816.

The previous prime is 472500961. The next prime is 472501019. The reversal of 472501009 is 900105274.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 326163600 + 146337409 = 18060^2 + 12097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472501009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472501019) 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 3 ways as a sum of consecutive naturals, for example, 13897072 + ... + 13897105.

It is an arithmetic number, because the mean of its divisors is an integer number (125073801).

Almost surely, 2^472501009 is an apocalyptic number.

It is an amenable number.

472501009 is a deficient number, since it is larger than the sum of its proper divisors (27794195).

472501009 is a wasteful number, since it uses less digits than its factorization.

472501009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27794194.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 472501009 is about 21737.0883284767. The cubic root of 472501009 is about 778.8746696928.

The spelling of 472501009 in words is "four hundred seventy-two million, five hundred one thousand, nine".