402443313 has 16 divisors (see below), whose sum is σ = 566488320. Its totient is φ = 253429776.

The previous prime is 402443311. The next prime is 402443347. The reversal of 402443313 is 313344204.

It is not a de Polignac number, because 402443313 - 2¹ = 402443311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402443311) 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 15 ways as a sum of consecutive naturals, for example, 9606 + ... + 29952.

It is an arithmetic number, because the mean of its divisors is an integer number (35405520).

Almost surely, 2^402443313 is an apocalyptic number.

It is an amenable number.

402443313 is a deficient number, since it is larger than the sum of its proper divisors (164045007).

402443313 is a wasteful number, since it uses less digits than its factorization.

402443313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20716.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 402443313 is about 20060.9898310128. The cubic root of 402443313 is about 738.3034624978.

Adding to 402443313 its reverse (313344204), we get a palindrome (715787517).

The spelling of 402443313 in words is "four hundred two million, four hundred forty-three thousand, three hundred thirteen".