402443013 has 16 divisors (see below), whose sum is σ = 620637696. Its totient is φ = 227195760.

The previous prime is 402442993. The next prime is 402443017. The reversal of 402443013 is 310344204.

It is not a de Polignac number, because 402443013 - 2⁹ = 402442501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402443017) 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, 113703 + ... + 117188.

It is an arithmetic number, because the mean of its divisors is an integer number (38789856).

Almost surely, 2^402443013 is an apocalyptic number.

It is an amenable number.

402443013 is a deficient number, since it is larger than the sum of its proper divisors (218194683).

402443013 is a wasteful number, since it uses less digits than its factorization.

402443013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230984.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402443013 is about 20060.9823538131. The cubic root of 402443013 is about 738.3032790425.

Adding to 402443013 its reverse (310344204), we get a palindrome (712787217).

The spelling of 402443013 in words is "four hundred two million, four hundred forty-three thousand, thirteen".