472219721 has 8 divisors (see below), whose sum is σ = 477731520. Its totient is φ = 466740208.

The previous prime is 472219717. The next prime is 472219723. The reversal of 472219721 is 127912274.

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 472219721 - 2² = 472219717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (472219723) 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, 21995 + ... + 37791.

It is an arithmetic number, because the mean of its divisors is an integer number (59716440).

Almost surely, 2^472219721 is an apocalyptic number.

It is an amenable number.

472219721 is a deficient number, since it is larger than the sum of its proper divisors (5511799).

472219721 is a wasteful number, since it uses less digits than its factorization.

472219721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16143.

The product of its digits is 14112, while the sum is 35.

The square root of 472219721 is about 21730.6171334364. The cubic root of 472219721 is about 778.7200798373.

The spelling of 472219721 in words is "four hundred seventy-two million, two hundred nineteen thousand, seven hundred twenty-one".