476447721 has 8 divisors (see below), whose sum is σ = 635389824. Its totient is φ = 317568720.

The previous prime is 476447693. The next prime is 476447723. The reversal of 476447721 is 127744674.

It is a happy number.

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

It is not a de Polignac number, because 476447721 - 2¹³ = 476439529 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (476447723) 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, 6231 + ... + 31491.

It is an arithmetic number, because the mean of its divisors is an integer number (79423728).

Almost surely, 2^476447721 is an apocalyptic number.

It is an amenable number.

476447721 is a deficient number, since it is larger than the sum of its proper divisors (158942103).

476447721 is a wasteful number, since it uses less digits than its factorization.

476447721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31551.

The product of its digits is 263424, while the sum is 42.

The square root of 476447721 is about 21827.6824468380. The cubic root of 476447721 is about 781.0372574354.

The spelling of 476447721 in words is "four hundred seventy-six million, four hundred forty-seven thousand, seven hundred twenty-one".