828764479 has 2 divisors, whose sum is σ = 828764480. Its totient is φ = 828764478.

The previous prime is 828764441. The next prime is 828764507. The reversal of 828764479 is 974467828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 828764479 - 2²¹ = 826667327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828764179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414382239 + 414382240.

It is an arithmetic number, because the mean of its divisors is an integer number (414382240).

Almost surely, 2^828764479 is an apocalyptic number.

828764479 is a deficient number, since it is larger than the sum of its proper divisors (1).

828764479 is an equidigital number, since it uses as much as digits as its factorization.

828764479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 55.

The square root of 828764479 is about 28788.2698160206. The cubic root of 828764479 is about 939.3130936828.

The spelling of 828764479 in words is "eight hundred twenty-eight million, seven hundred sixty-four thousand, four hundred seventy-nine".