823800349 has 4 divisors (see below), whose sum is σ = 841328064. Its totient is φ = 806272636.

The previous prime is 823800343. The next prime is 823800353. The reversal of 823800349 is 943008328.

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 823800349 - 2⁷ = 823800221 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 (823800343) 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 3 ways as a sum of consecutive naturals, for example, 8763787 + ... + 8763880.

It is an arithmetic number, because the mean of its divisors is an integer number (210332016).

Almost surely, 2^823800349 is an apocalyptic number.

It is an amenable number.

823800349 is a deficient number, since it is larger than the sum of its proper divisors (17527715).

823800349 is a wasteful number, since it uses less digits than its factorization.

823800349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17527714.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 823800349 is about 28701.9223920629. The cubic root of 823800349 is about 937.4339054797.

The spelling of 823800349 in words is "eight hundred twenty-three million, eight hundred thousand, three hundred forty-nine".