434779409173 has 2 divisors, whose sum is σ = 434779409174. Its totient is φ = 434779409172.

The previous prime is 434779409149. The next prime is 434779409201. The reversal of 434779409173 is 371904977434.

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., 434553868849 + 225540324 = 659207^2 + 15018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434779409173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434779409873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217389704586 + 217389704587.

It is an arithmetic number, because the mean of its divisors is an integer number (217389704587).

Almost surely, 2^434779409173 is an apocalyptic number.

It is an amenable number.

434779409173 is a deficient number, since it is larger than the sum of its proper divisors (1).

434779409173 is an equidigital number, since it uses as much as digits as its factorization.

434779409173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 58.

The spelling of 434779409173 in words is "four hundred thirty-four billion, seven hundred seventy-nine million, four hundred nine thousand, one hundred seventy-three".