838821045 has 8 divisors (see below), whose sum is σ = 1342113696. Its totient is φ = 447371216.

The previous prime is 838820951. The next prime is 838821083. The reversal of 838821045 is 540128838.

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

It is a cyclic number.

It is not a de Polignac number, because 838821045 - 2¹² = 838816949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 838820994 and 838821012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27960687 + ... + 27960716.

It is an arithmetic number, because the mean of its divisors is an integer number (167764212).

Almost surely, 2^838821045 is an apocalyptic number.

It is an amenable number.

838821045 is a deficient number, since it is larger than the sum of its proper divisors (503292651).

838821045 is a wasteful number, since it uses less digits than its factorization.

838821045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55921411.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 838821045 is about 28962.4074448241. The cubic root of 838821045 is about 943.0971648700.

The spelling of 838821045 in words is "eight hundred thirty-eight million, eight hundred twenty-one thousand, forty-five".