821314838 has 8 divisors (see below), whose sum is σ = 1233127920. Its totient is φ = 410272200.

The previous prime is 821314807. The next prime is 821314859. The reversal of 821314838 is 838413128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189938 + ... + 194213.

It is an arithmetic number, because the mean of its divisors is an integer number (154140990).

Almost surely, 2^821314838 is an apocalyptic number.

821314838 is a deficient number, since it is larger than the sum of its proper divisors (411813082).

821314838 is a wasteful number, since it uses less digits than its factorization.

821314838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385222.

The product of its digits is 36864, while the sum is 38.

The square root of 821314838 is about 28658.5909981632. The cubic root of 821314838 is about 936.4901697281.

The spelling of 821314838 in words is "eight hundred twenty-one million, three hundred fourteen thousand, eight hundred thirty-eight".