683456399 has 4 divisors (see below), whose sum is σ = 685654320. Its totient is φ = 681258480.

The previous prime is 683456387. The next prime is 683456407. The reversal of 683456399 is 993654386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 683456399 - 2⁸ = 683456143 is a prime.

It is a super-2 number, since 2×683456399² = 934225298668094402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 683456399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683456329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098494 + ... + 1099115.

It is an arithmetic number, because the mean of its divisors is an integer number (171413580).

Almost surely, 2^683456399 is an apocalyptic number.

683456399 is a deficient number, since it is larger than the sum of its proper divisors (2197921).

683456399 is a wasteful number, since it uses less digits than its factorization.

683456399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197920.

The product of its digits is 4199040, while the sum is 53.

The square root of 683456399 is about 26142.9990437211. Note that the first 3 decimals coincide. The cubic root of 683456399 is about 880.8533384840.

The spelling of 683456399 in words is "six hundred eighty-three million, four hundred fifty-six thousand, three hundred ninety-nine".