472797721 has 8 divisors (see below), whose sum is σ = 516118464. Its totient is φ = 429533520.

The previous prime is 472797719. The next prime is 472797749. The reversal of 472797721 is 127797274.

It is a happy number.

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 472797721 - 2¹ = 472797719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472798721) 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, 4420 + ... + 31066.

It is an arithmetic number, because the mean of its divisors is an integer number (64514808).

Almost surely, 2^472797721 is an apocalyptic number.

It is an amenable number.

472797721 is a deficient number, since it is larger than the sum of its proper divisors (43320743).

472797721 is a wasteful number, since it uses less digits than its factorization.

472797721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28271.

The product of its digits is 345744, while the sum is 46.

The square root of 472797721 is about 21743.9122744735. The cubic root of 472797721 is about 779.0376697706.

The spelling of 472797721 in words is "four hundred seventy-two million, seven hundred ninety-seven thousand, seven hundred twenty-one".