821201793 has 8 divisors (see below), whose sum is σ = 1152564000. Its totient is φ = 518653728.

The previous prime is 821201723. The next prime is 821201807. The reversal of 821201793 is 397102128.

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

It is not a de Polignac number, because 821201793 - 2¹³ = 821193601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (821201713) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7203468 + ... + 7203581.

It is an arithmetic number, because the mean of its divisors is an integer number (144070500).

Almost surely, 2^821201793 is an apocalyptic number.

It is an amenable number.

821201793 is a deficient number, since it is larger than the sum of its proper divisors (331362207).

821201793 is a wasteful number, since it uses less digits than its factorization.

821201793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14407071.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 821201793 is about 28656.6186595697. The cubic root of 821201793 is about 936.4472018820.

The spelling of 821201793 in words is "eight hundred twenty-one million, two hundred one thousand, seven hundred ninety-three".