323878447 has 2 divisors, whose sum is σ = 323878448. Its totient is φ = 323878446.

The previous prime is 323878403. The next prime is 323878481. The reversal of 323878447 is 744878323.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323878447 - 2⁷ = 323878319 is a prime.

It is a super-2 number, since 2×323878447² = 209794496862263618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323878397 and 323878406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323878547) by changing a digit.

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 as a sum of consecutive naturals, namely, 161939223 + 161939224.

It is an arithmetic number, because the mean of its divisors is an integer number (161939224).

Almost surely, 2^323878447 is an apocalyptic number.

323878447 is a deficient number, since it is larger than the sum of its proper divisors (1).

323878447 is an equidigital number, since it uses as much as digits as its factorization.

323878447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 46.

The square root of 323878447 is about 17996.6232110360. The cubic root of 323878447 is about 686.7426437700.

The spelling of 323878447 in words is "three hundred twenty-three million, eight hundred seventy-eight thousand, four hundred forty-seven".