34189861 has 2 divisors, whose sum is σ = 34189862. Its totient is φ = 34189860.

The previous prime is 34189853. The next prime is 34189871. The reversal of 34189861 is 16898143.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 7667361 = 5150^2 + 2769^2 .

It is an emirp because it is prime and its reverse (16898143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34189861 - 2³ = 34189853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34189871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17094930 + 17094931.

It is an arithmetic number, because the mean of its divisors is an integer number (17094931).

Almost surely, 2^34189861 is an apocalyptic number.

It is an amenable number.

34189861 is a deficient number, since it is larger than the sum of its proper divisors (1).

34189861 is an equidigital number, since it uses as much as digits as its factorization.

34189861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 34189861 is about 5847.2096764183. The cubic root of 34189861 is about 324.5630767781.

The spelling of 34189861 in words is "thirty-four million, one hundred eighty-nine thousand, eight hundred sixty-one".