683449919 has 2 divisors, whose sum is σ = 683449920. Its totient is φ = 683449918.

The previous prime is 683449913. The next prime is 683449937. The reversal of 683449919 is 919944386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683449919 is a prime.

It is a super-2 number, since 2×683449919² = 934207583562213122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683449913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341724959 + 341724960.

It is an arithmetic number, because the mean of its divisors is an integer number (341724960).

Almost surely, 2^683449919 is an apocalyptic number.

683449919 is a deficient number, since it is larger than the sum of its proper divisors (1).

683449919 is an equidigital number, since it uses as much as digits as its factorization.

683449919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 683449919 is about 26142.8751096738. The cubic root of 683449919 is about 880.8505546207.

The spelling of 683449919 in words is "six hundred eighty-three million, four hundred forty-nine thousand, nine hundred nineteen".