433940457409 has 2 divisors, whose sum is σ = 433940457410. Its totient is φ = 433940457408.

The previous prime is 433940457331. The next prime is 433940457439. The reversal of 433940457409 is 904754049334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432102449025 + 1838008384 = 657345^2 + 42872^2 .

It is a cyclic number.

It is not a de Polignac number, because 433940457409 - 2²⁷ = 433806239681 is a prime.

It is not a weakly prime, because it can be changed into another prime (433940457439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216970228704 + 216970228705.

It is an arithmetic number, because the mean of its divisors is an integer number (216970228705).

Almost surely, 2^433940457409 is an apocalyptic number.

It is an amenable number.

433940457409 is a deficient number, since it is larger than the sum of its proper divisors (1).

433940457409 is an equidigital number, since it uses as much as digits as its factorization.

433940457409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 433940457409 in words is "four hundred thirty-three billion, nine hundred forty million, four hundred fifty-seven thousand, four hundred nine".