472308821 has 8 divisors (see below), whose sum is σ = 499917600. Its totient is φ = 444975120.

The previous prime is 472308817. The next prime is 472308829. The reversal of 472308821 is 128803274.

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

It is a cyclic number.

It is not a de Polignac number, because 472308821 - 2² = 472308817 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 (472308829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65231 + ... + 72108.

It is an arithmetic number, because the mean of its divisors is an integer number (62489700).

Almost surely, 2^472308821 is an apocalyptic number.

It is an amenable number.

472308821 is a deficient number, since it is larger than the sum of its proper divisors (27608779).

472308821 is a wasteful number, since it uses less digits than its factorization.

472308821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137539.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 472308821 is about 21732.6671395851. The cubic root of 472308821 is about 778.7690539289.

The spelling of 472308821 in words is "four hundred seventy-two million, three hundred eight thousand, eight hundred twenty-one".