472407221 has 12 divisors (see below), whose sum is σ = 558047520. Its totient is φ = 396424080.

The previous prime is 472407211. The next prime is 472407223. The reversal of 472407221 is 122704274.

It is a de Polignac number, because none of the positive numbers 2^k-472407221 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 (472407223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125201 + ... + 128918.

It is an arithmetic number, because the mean of its divisors is an integer number (46503960).

Almost surely, 2^472407221 is an apocalyptic number.

It is an amenable number.

472407221 is a deficient number, since it is larger than the sum of its proper divisors (85640299).

472407221 is a wasteful number, since it uses less digits than its factorization.

472407221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254156 (or 254143 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 472407221 is about 21734.9308947602. The cubic root of 472407221 is about 778.8231326379.

The spelling of 472407221 in words is "four hundred seventy-two million, four hundred seven thousand, two hundred twenty-one".