430946921 has 2 divisors, whose sum is σ = 430946922. Its totient is φ = 430946920.

The previous prime is 430946911. The next prime is 430946951. The reversal of 430946921 is 129649034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242269225 + 188677696 = 15565^2 + 13736^2 .

It is a cyclic number.

It is not a de Polignac number, because 430946921 - 2¹⁴ = 430930537 is a prime.

It is not a weakly prime, because it can be changed into another prime (430946911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215473460 + 215473461.

It is an arithmetic number, because the mean of its divisors is an integer number (215473461).

Almost surely, 2^430946921 is an apocalyptic number.

It is an amenable number.

430946921 is a deficient number, since it is larger than the sum of its proper divisors (1).

430946921 is an equidigital number, since it uses as much as digits as its factorization.

430946921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 430946921 is about 20759.2610899328. The cubic root of 430946921 is about 755.3378725459.

The spelling of 430946921 in words is "four hundred thirty million, nine hundred forty-six thousand, nine hundred twenty-one".