434290861 has 2 divisors, whose sum is σ = 434290862. Its totient is φ = 434290860.

The previous prime is 434290859. The next prime is 434290877. The reversal of 434290861 is 168092434.

434290861 = T₁₇₀₁₄ + T₁₇₀₁₅ + T₁₇₀₁₆.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314388361 + 119902500 = 17731^2 + 10950^2 .

It is a cyclic number.

It is not a de Polignac number, because 434290861 - 2¹ = 434290859 is a prime.

Together with 434290859, it forms a pair of twin primes.

It is equal to p_23063689 and since 434290861 and 23063689 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434290861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434290061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217145430 + 217145431.

It is an arithmetic number, because the mean of its divisors is an integer number (217145431).

Almost surely, 2^434290861 is an apocalyptic number.

434290861 is the 17016-th centered triangular number.

It is an amenable number.

434290861 is a deficient number, since it is larger than the sum of its proper divisors (1).

434290861 is an equidigital number, since it uses as much as digits as its factorization.

434290861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 434290861 is about 20839.6463741590. The cubic root of 434290861 is about 757.2865267094.

The spelling of 434290861 in words is "four hundred thirty-four million, two hundred ninety thousand, eight hundred sixty-one".