828293861 has 4 divisors (see below), whose sum is σ = 842332800. Its totient is φ = 814254924.

The previous prime is 828293857. The next prime is 828293863. The reversal of 828293861 is 168392828.

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.

It is a cyclic number.

It is not a de Polignac number, because 828293861 - 2² = 828293857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828293863) 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, 7019381 + ... + 7019498.

It is an arithmetic number, because the mean of its divisors is an integer number (210583200).

Almost surely, 2^828293861 is an apocalyptic number.

It is an amenable number.

828293861 is a deficient number, since it is larger than the sum of its proper divisors (14038939).

828293861 is a wasteful number, since it uses less digits than its factorization.

828293861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14038938.

The product of its digits is 331776, while the sum is 47.

The square root of 828293861 is about 28780.0948747568. The cubic root of 828293861 is about 939.1352621589.

The spelling of 828293861 in words is "eight hundred twenty-eight million, two hundred ninety-three thousand, eight hundred sixty-one".