472206921 has 8 divisors (see below), whose sum is σ = 630151584. Its totient is φ = 314533440.

The previous prime is 472206907. The next prime is 472206929. The reversal of 472206921 is 129602274.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 472206921 - 2⁹ = 472206409 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (472206929) 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 7 ways as a sum of consecutive naturals, for example, 63696 + ... + 70721.

It is an arithmetic number, because the mean of its divisors is an integer number (78768948).

Almost surely, 2^472206921 is an apocalyptic number.

It is an amenable number.

472206921 is a deficient number, since it is larger than the sum of its proper divisors (157944663).

472206921 is a wasteful number, since it uses less digits than its factorization.

472206921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135591.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 472206921 is about 21730.3226161049. The cubic root of 472206921 is about 778.7130437715.

The spelling of 472206921 in words is "four hundred seventy-two million, two hundred six thousand, nine hundred twenty-one".