985487429 has 2 divisors, whose sum is σ = 985487430. Its totient is φ = 985487428.

The previous prime is 985487423. The next prime is 985487431. The reversal of 985487429 is 924784589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628655329 + 356832100 = 25073^2 + 18890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985487429 is a prime.

Together with 985487431, 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 (985487423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492743714 + 492743715.

It is an arithmetic number, because the mean of its divisors is an integer number (492743715).

Almost surely, 2^985487429 is an apocalyptic number.

It is an amenable number.

985487429 is a deficient number, since it is larger than the sum of its proper divisors (1).

985487429 is an equidigital number, since it uses as much as digits as its factorization.

985487429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 985487429 is about 31392.4740821745. The cubic root of 985487429 is about 995.1388841764.

The spelling of 985487429 in words is "nine hundred eighty-five million, four hundred eighty-seven thousand, four hundred twenty-nine".