828399097 has 2 divisors, whose sum is σ = 828399098. Its totient is φ = 828399096.

The previous prime is 828399083. The next prime is 828399149. The reversal of 828399097 is 790993828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468765801 + 359633296 = 21651^2 + 18964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828399097 is a prime.

It is not a weakly prime, because it can be changed into another prime (828396097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414199548 + 414199549.

It is an arithmetic number, because the mean of its divisors is an integer number (414199549).

Almost surely, 2^828399097 is an apocalyptic number.

It is an amenable number.

828399097 is a deficient number, since it is larger than the sum of its proper divisors (1).

828399097 is an equidigital number, since it uses as much as digits as its factorization.

828399097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 828399097 is about 28781.9230941923. The cubic root of 828399097 is about 939.1750333311.

The spelling of 828399097 in words is "eight hundred twenty-eight million, three hundred ninety-nine thousand, ninety-seven".