323979139 has 4 divisors (see below), whose sum is σ = 353431800. Its totient is φ = 294526480.

The previous prime is 323979137. The next prime is 323979163. The reversal of 323979139 is 931979323.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 323979139 - 2¹ = 323979137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323979133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14726314 + ... + 14726335.

It is an arithmetic number, because the mean of its divisors is an integer number (88357950).

Almost surely, 2^323979139 is an apocalyptic number.

323979139 is a deficient number, since it is larger than the sum of its proper divisors (29452661).

323979139 is a wasteful number, since it uses less digits than its factorization.

323979139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452660.

The product of its digits is 275562, while the sum is 46.

The square root of 323979139 is about 17999.4205184500. The cubic root of 323979139 is about 686.8138045466.

The spelling of 323979139 in words is "three hundred twenty-three million, nine hundred seventy-nine thousand, one hundred thirty-nine".