828234247 has 2 divisors, whose sum is σ = 828234248. Its totient is φ = 828234246.

The previous prime is 828234131. The next prime is 828234289. The reversal of 828234247 is 742432828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828234247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828237247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414117123 + 414117124.

It is an arithmetic number, because the mean of its divisors is an integer number (414117124).

Almost surely, 2^828234247 is an apocalyptic number.

828234247 is a deficient number, since it is larger than the sum of its proper divisors (1).

828234247 is an equidigital number, since it uses as much as digits as its factorization.

828234247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 40.

The square root of 828234247 is about 28779.0591750321. The cubic root of 828234247 is about 939.1127311244.

The spelling of 828234247 in words is "eight hundred twenty-eight million, two hundred thirty-four thousand, two hundred forty-seven".