978234329 has 2 divisors, whose sum is σ = 978234330. Its totient is φ = 978234328.

The previous prime is 978234311. The next prime is 978234331. The reversal of 978234329 is 923432879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673662025 + 304572304 = 25955^2 + 17452^2 .

It is an emirp because it is prime and its reverse (923432879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978234329 - 2²⁰ = 977185753 is a prime.

Together with 978234331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (978234029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489117164 + 489117165.

It is an arithmetic number, because the mean of its divisors is an integer number (489117165).

Almost surely, 2^978234329 is an apocalyptic number.

It is an amenable number.

978234329 is a deficient number, since it is larger than the sum of its proper divisors (1).

978234329 is an equidigital number, since it uses as much as digits as its factorization.

978234329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 978234329 is about 31276.7378254191. The cubic root of 978234329 is about 992.6914921729.

The spelling of 978234329 in words is "nine hundred seventy-eight million, two hundred thirty-four thousand, three hundred twenty-nine".