784423 has 2 divisors, whose sum is σ = 784424. Its totient is φ = 784422.

The previous prime is 784411. The next prime is 784447. The reversal of 784423 is 324487.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-784423 is a prime.

784423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 784391 and 784400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392211 + 392212.

It is an arithmetic number, because the mean of its divisors is an integer number (392212).

2⁷⁸⁴⁴²³ is an apocalyptic number.

784423 is a deficient number, since it is larger than the sum of its proper divisors (1).

784423 is an equidigital number, since it uses as much as digits as its factorization.

784423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 784423 is about 885.6765775383. The cubic root of 784423 is about 92.2253063166.

The spelling of 784423 in words is "seven hundred eighty-four thousand, four hundred twenty-three".