828674993 has 4 divisors (see below), whose sum is σ = 828738048. Its totient is φ = 828611940.

The previous prime is 828674989. The next prime is 828675011. The reversal of 828674993 is 399476828.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 828674993 - 2² = 828674989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828674933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521 + ... + 40862.

It is an arithmetic number, because the mean of its divisors is an integer number (207184512).

Almost surely, 2^828674993 is an apocalyptic number.

It is an amenable number.

828674993 is a deficient number, since it is larger than the sum of its proper divisors (63055).

828674993 is a wasteful number, since it uses less digits than its factorization.

828674993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63054.

The product of its digits is 5225472, while the sum is 56.

The square root of 828674993 is about 28786.7155646489. The cubic root of 828674993 is about 939.2792849635.

The spelling of 828674993 in words is "eight hundred twenty-eight million, six hundred seventy-four thousand, nine hundred ninety-three".