828764393 has 2 divisors, whose sum is σ = 828764394. Its totient is φ = 828764392.

The previous prime is 828764383. The next prime is 828764423. The reversal of 828764393 is 393467828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605799769 + 222964624 = 24613^2 + 14932^2 .

It is a cyclic number.

It is not a de Polignac number, because 828764393 - 2⁶ = 828764329 is a prime.

It is not a weakly prime, because it can be changed into another prime (828764383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414382196 + 414382197.

It is an arithmetic number, because the mean of its divisors is an integer number (414382197).

Almost surely, 2^828764393 is an apocalyptic number.

It is an amenable number.

828764393 is a deficient number, since it is larger than the sum of its proper divisors (1).

828764393 is an equidigital number, since it uses as much as digits as its factorization.

828764393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 828764393 is about 28788.2683223566. The cubic root of 828764393 is about 939.3130611923.

The spelling of 828764393 in words is "eight hundred twenty-eight million, seven hundred sixty-four thousand, three hundred ninety-three".