470016721 has 2 divisors, whose sum is σ = 470016722. Its totient is φ = 470016720.

The previous prime is 470016719. The next prime is 470016739. The reversal of 470016721 is 127610074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391446225 + 78570496 = 19785^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 470016721 - 2¹ = 470016719 is a prime.

Together with 470016719, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 470016721.

It is not a weakly prime, because it can be changed into another prime (470016791) 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 as a sum of consecutive naturals, namely, 235008360 + 235008361.

It is an arithmetic number, because the mean of its divisors is an integer number (235008361).

Almost surely, 2^470016721 is an apocalyptic number.

It is an amenable number.

470016721 is a deficient number, since it is larger than the sum of its proper divisors (1).

470016721 is an equidigital number, since it uses as much as digits as its factorization.

470016721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 470016721 is about 21679.8690263571. The cubic root of 470016721 is about 777.5072298690.

Adding to 470016721 its reverse (127610074), we get a palindrome (597626795).

The spelling of 470016721 in words is "four hundred seventy million, sixteen thousand, seven hundred twenty-one".