323878949 has 2 divisors, whose sum is σ = 323878950. Its totient is φ = 323878948.

The previous prime is 323878943. The next prime is 323878969. The reversal of 323878949 is 949878323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304677025 + 19201924 = 17455^2 + 4382^2 .

It is a cyclic number.

It is not a de Polignac number, because 323878949 - 2¹² = 323874853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 323878949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323878943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161939474 + 161939475.

It is an arithmetic number, because the mean of its divisors is an integer number (161939475).

Almost surely, 2^323878949 is an apocalyptic number.

It is an amenable number.

323878949 is a deficient number, since it is larger than the sum of its proper divisors (1).

323878949 is an equidigital number, since it uses as much as digits as its factorization.

323878949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The square root of 323878949 is about 17996.6371580915. The cubic root of 323878949 is about 686.7429985786.

The spelling of 323878949 in words is "three hundred twenty-three million, eight hundred seventy-eight thousand, nine hundred forty-nine".