464792821 has 2 divisors, whose sum is σ = 464792822. Its totient is φ = 464792820.

The previous prime is 464792813. The next prime is 464792833. The reversal of 464792821 is 128297464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322920900 + 141871921 = 17970^2 + 11911^2 .

It is a cyclic number.

It is not a de Polignac number, because 464792821 - 2³ = 464792813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464798821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232396410 + 232396411.

It is an arithmetic number, because the mean of its divisors is an integer number (232396411).

Almost surely, 2^464792821 is an apocalyptic number.

It is an amenable number.

464792821 is a deficient number, since it is larger than the sum of its proper divisors (1).

464792821 is an equidigital number, since it uses as much as digits as its factorization.

464792821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 464792821 is about 21559.0542696103. The cubic root of 464792821 is about 774.6160129001.

The spelling of 464792821 in words is "four hundred sixty-four million, seven hundred ninety-two thousand, eight hundred twenty-one".