828365869 has 2 divisors, whose sum is σ = 828365870. Its totient is φ = 828365868.

The previous prime is 828365807. The next prime is 828365893. The reversal of 828365869 is 968563828.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673662025 + 154703844 = 25955^2 + 12438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828365869 is a prime.

It is a super-2 number, since 2×828365869² = 1372380025848250322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828365569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414182934 + 414182935.

It is an arithmetic number, because the mean of its divisors is an integer number (414182935).

Almost surely, 2^828365869 is an apocalyptic number.

It is an amenable number.

828365869 is a deficient number, since it is larger than the sum of its proper divisors (1).

828365869 is an equidigital number, since it uses as much as digits as its factorization.

828365869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 55.

The square root of 828365869 is about 28781.3458510890. The cubic root of 828365869 is about 939.1624760483.

The spelling of 828365869 in words is "eight hundred twenty-eight million, three hundred sixty-five thousand, eight hundred sixty-nine".