470215721 has 8 divisors (see below), whose sum is σ = 485822400. Its totient is φ = 454761648.

The previous prime is 470215639. The next prime is 470215729. The reversal of 470215721 is 127512074.

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 470215721 - 2¹⁴ = 470199337 is a prime.

It is a super-2 number, since 2×470215721² = 442205648551099682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (470215729) 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, 31871 + ... + 44228.

It is an arithmetic number, because the mean of its divisors is an integer number (60727800).

Almost surely, 2^470215721 is an apocalyptic number.

It is an amenable number.

470215721 is a deficient number, since it is larger than the sum of its proper divisors (15606679).

470215721 is a wasteful number, since it uses less digits than its factorization.

470215721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76303.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 470215721 is about 21684.4580517937. The cubic root of 470215721 is about 777.6169437727.

Adding to 470215721 its reverse (127512074), we get a palindrome (597727795).

The spelling of 470215721 in words is "four hundred seventy million, two hundred fifteen thousand, seven hundred twenty-one".