823009379 has 8 divisors (see below), whose sum is σ = 845158512. Its totient is φ = 800997120.

The previous prime is 823009361. The next prime is 823009393. The reversal of 823009379 is 973900328.

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

It is not a de Polignac number, because 823009379 - 2¹² = 823005283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823009309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21974 + ... + 46139.

It is an arithmetic number, because the mean of its divisors is an integer number (105644814).

Almost surely, 2^823009379 is an apocalyptic number.

823009379 is a deficient number, since it is larger than the sum of its proper divisors (22149133).

823009379 is a wasteful number, since it uses less digits than its factorization.

823009379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68437.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 823009379 is about 28688.1400407904. The cubic root of 823009379 is about 937.1337844068.

The spelling of 823009379 in words is "eight hundred twenty-three million, nine thousand, three hundred seventy-nine".