318839429 has 2 divisors, whose sum is σ = 318839430. Its totient is φ = 318839428.

The previous prime is 318839413. The next prime is 318839431. The reversal of 318839429 is 924938813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188925025 + 129914404 = 13745^2 + 11398^2 .

It is a cyclic number.

It is not a de Polignac number, because 318839429 - 2⁴ = 318839413 is a prime.

Together with 318839431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318832429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159419714 + 159419715.

It is an arithmetic number, because the mean of its divisors is an integer number (159419715).

Almost surely, 2^318839429 is an apocalyptic number.

It is an amenable number.

318839429 is a deficient number, since it is larger than the sum of its proper divisors (1).

318839429 is an equidigital number, since it uses as much as digits as its factorization.

318839429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 318839429 is about 17856.0754086669. The cubic root of 318839429 is about 683.1624817887.

The spelling of 318839429 in words is "three hundred eighteen million, eight hundred thirty-nine thousand, four hundred twenty-nine".