468521993 has 2 divisors, whose sum is σ = 468521994. Its totient is φ = 468521992.

The previous prime is 468521959. The next prime is 468522011. The reversal of 468521993 is 399125864.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452497984 + 16024009 = 21272^2 + 4003^2 .

It is a cyclic number.

It is not a de Polignac number, because 468521993 - 2⁶ = 468521929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (468521093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234260996 + 234260997.

It is an arithmetic number, because the mean of its divisors is an integer number (234260997).

Almost surely, 2^468521993 is an apocalyptic number.

It is an amenable number.

468521993 is a deficient number, since it is larger than the sum of its proper divisors (1).

468521993 is an equidigital number, since it uses as much as digits as its factorization.

468521993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 468521993 is about 21645.3688580260. The cubic root of 468521993 is about 776.6821557039.

The spelling of 468521993 in words is "four hundred sixty-eight million, five hundred twenty-one thousand, nine hundred ninety-three".