402445323 has 12 divisors (see below), whose sum is σ = 664354288. Its totient is φ = 229968720.

The previous prime is 402445321. The next prime is 402445339. The reversal of 402445323 is 323544204.

It is not a de Polignac number, because 402445323 - 2¹ = 402445321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402445321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3193948 + ... + 3194073.

Almost surely, 2^402445323 is an apocalyptic number.

402445323 is a deficient number, since it is larger than the sum of its proper divisors (261908965).

402445323 is a wasteful number, since it uses less digits than its factorization.

402445323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388034 (or 6388031 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 402445323 is about 20061.0399281792. The cubic root of 402445323 is about 738.3046916460.

Adding to 402445323 its reverse (323544204), we get a palindrome (725989527).

The spelling of 402445323 in words is "four hundred two million, four hundred forty-five thousand, three hundred twenty-three".