793189821 has 4 divisors (see below), whose sum is σ = 1057586432. Its totient is φ = 528793212.

The previous prime is 793189769. The next prime is 793189841. The reversal of 793189821 is 128981397.

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 not a de Polignac number, because 793189821 - 2²¹ = 791092669 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 (793189841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 132198301 + ... + 132198306.

It is an arithmetic number, because the mean of its divisors is an integer number (264396608).

Almost surely, 2^793189821 is an apocalyptic number.

It is an amenable number.

793189821 is a deficient number, since it is larger than the sum of its proper divisors (264396611).

793189821 is a wasteful number, since it uses less digits than its factorization.

793189821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264396610.

The product of its digits is 217728, while the sum is 48.

The square root of 793189821 is about 28163.6258496664. The cubic root of 793189821 is about 925.6760856144.

The spelling of 793189821 in words is "seven hundred ninety-three million, one hundred eighty-nine thousand, eight hundred twenty-one".