434599861 has 2 divisors, whose sum is σ = 434599862. Its totient is φ = 434599860.

The previous prime is 434599859. The next prime is 434599889. The reversal of 434599861 is 168995434.

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., 255200625 + 179399236 = 15975^2 + 13394^2 .

It is a cyclic number.

It is not a de Polignac number, because 434599861 - 2¹ = 434599859 is a prime.

Together with 434599859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434599801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217299930 + 217299931.

It is an arithmetic number, because the mean of its divisors is an integer number (217299931).

Almost surely, 2^434599861 is an apocalyptic number.

It is an amenable number.

434599861 is a deficient number, since it is larger than the sum of its proper divisors (1).

434599861 is an equidigital number, since it uses as much as digits as its factorization.

434599861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The square root of 434599861 is about 20847.0588093381. The cubic root of 434599861 is about 757.4660884440.

The spelling of 434599861 in words is "four hundred thirty-four million, five hundred ninety-nine thousand, eight hundred sixty-one".