3400823 has 2 divisors, whose sum is σ = 3400824. Its totient is φ = 3400822.

The previous prime is 3400739. The next prime is 3400841. The reversal of 3400823 is 3280043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3400823 - 2²⁰ = 2352247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3400795 and 3400804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3400843) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700411 + 1700412.

It is an arithmetic number, because the mean of its divisors is an integer number (1700412).

Almost surely, 2^3400823 is an apocalyptic number.

3400823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3400823 is an equidigital number, since it uses as much as digits as its factorization.

3400823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3400823 is about 1844.1320451638. The cubic root of 3400823 is about 150.3815913932.

Adding to 3400823 its reverse (3280043), we get a palindrome (6680866).

The spelling of 3400823 in words is "three million, four hundred thousand, eight hundred twenty-three".