523368394 has 16 divisors (see below), whose sum is σ = 831013920. Its totient is φ = 246783600.

The previous prime is 523368361. The next prime is 523368407. The reversal of 523368394 is 493863325.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 523368394.

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, 102432 + ... + 107419.

It is an arithmetic number, because the mean of its divisors is an integer number (51938370).

Almost surely, 2^523368394 is an apocalyptic number.

523368394 is a deficient number, since it is larger than the sum of its proper divisors (307645526).

523368394 is a wasteful number, since it uses less digits than its factorization.

523368394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209925.

The product of its digits is 466560, while the sum is 43.

The square root of 523368394 is about 22877.2462066570. The cubic root of 523368394 is about 805.8777478790.

The spelling of 523368394 in words is "five hundred twenty-three million, three hundred sixty-eight thousand, three hundred ninety-four".