472159821 has 16 divisors (see below), whose sum is σ = 722577024. Its totient is φ = 268644864.

The previous prime is 472159811. The next prime is 472159837. The reversal of 472159821 is 128951274.

It is not a de Polignac number, because 472159821 - 2⁵ = 472159789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 472159821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472159811) 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 15 ways as a sum of consecutive naturals, for example, 43356 + ... + 53141.

It is an arithmetic number, because the mean of its divisors is an integer number (45161064).

Almost surely, 2^472159821 is an apocalyptic number.

It is an amenable number.

472159821 is a deficient number, since it is larger than the sum of its proper divisors (250417203).

472159821 is a wasteful number, since it uses less digits than its factorization.

472159821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96740.

The product of its digits is 40320, while the sum is 39.

The square root of 472159821 is about 21729.2388499920. The cubic root of 472159821 is about 778.6871521533.

The spelling of 472159821 in words is "four hundred seventy-two million, one hundred fifty-nine thousand, eight hundred twenty-one".