1323039906 has 40 divisors (see below), whose sum is σ = 3036911724. Its totient is φ = 430254720.

The previous prime is 1323039889. The next prime is 1323039911. The reversal of 1323039906 is 6099303231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 837234225 + 485805681 = 28935^2 + 22041^2 .

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 92955 + ... + 106238.

Almost surely, 2^1323039906 is an apocalyptic number.

1323039906 is an abundant number, since it is smaller than the sum of its proper divisors (1713871818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323039906 is a wasteful number, since it uses less digits than its factorization.

1323039906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199248 (or 199239 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 1323039906 is about 36373.6155200442. The cubic root of 1323039906 is about 1097.8027505568.

The spelling of 1323039906 in words is "one billion, three hundred twenty-three million, thirty-nine thousand, nine hundred six".