468992221 has 2 divisors, whose sum is σ = 468992222. Its totient is φ = 468992220.

The previous prime is 468992213. The next prime is 468992233. The reversal of 468992221 is 122299864.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353966596 + 115025625 = 18814^2 + 10725^2 .

It is a cyclic number.

It is not a de Polignac number, because 468992221 - 2³ = 468992213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (468992261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234496110 + 234496111.

It is an arithmetic number, because the mean of its divisors is an integer number (234496111).

Almost surely, 2^468992221 is an apocalyptic number.

It is an amenable number.

468992221 is a deficient number, since it is larger than the sum of its proper divisors (1).

468992221 is an equidigital number, since it uses as much as digits as its factorization.

468992221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 468992221 is about 21656.2282265403. The cubic root of 468992221 is about 776.9419055753.

The spelling of 468992221 in words is "four hundred sixty-eight million, nine hundred ninety-two thousand, two hundred twenty-one".