464488721 has 2 divisors, whose sum is σ = 464488722. Its totient is φ = 464488720.

The previous prime is 464488691. The next prime is 464488729. The reversal of 464488721 is 127884464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309760000 + 154728721 = 17600^2 + 12439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464488721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (464488729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232244360 + 232244361.

It is an arithmetic number, because the mean of its divisors is an integer number (232244361).

Almost surely, 2^464488721 is an apocalyptic number.

It is an amenable number.

464488721 is a deficient number, since it is larger than the sum of its proper divisors (1).

464488721 is an equidigital number, since it uses as much as digits as its factorization.

464488721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 344064, while the sum is 44.

The square root of 464488721 is about 21552.0003943949. Note that the first 3 decimals coincide. The cubic root of 464488721 is about 774.4470400367.

The spelling of 464488721 in words is "four hundred sixty-four million, four hundred eighty-eight thousand, seven hundred twenty-one".