434861993 has 2 divisors, whose sum is σ = 434861994. Its totient is φ = 434861992.

The previous prime is 434861981. The next prime is 434862011. The reversal of 434861993 is 399168434.

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., 283989904 + 150872089 = 16852^2 + 12283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434861993 is a prime.

It is not a weakly prime, because it can be changed into another prime (434861923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217430996 + 217430997.

It is an arithmetic number, because the mean of its divisors is an integer number (217430997).

Almost surely, 2^434861993 is an apocalyptic number.

It is an amenable number.

434861993 is a deficient number, since it is larger than the sum of its proper divisors (1).

434861993 is an equidigital number, since it uses as much as digits as its factorization.

434861993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 434861993 is about 20853.3448875714. The cubic root of 434861993 is about 757.6183481904.

The spelling of 434861993 in words is "four hundred thirty-four million, eight hundred sixty-one thousand, nine hundred ninety-three".