402344013 has 4 divisors (see below), whose sum is σ = 536458688. Its totient is φ = 268229340.

The previous prime is 402344011. The next prime is 402344021. The reversal of 402344013 is 310443204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 402344013 - 2¹ = 402344011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402344011) 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 3 ways as a sum of consecutive naturals, for example, 67057333 + ... + 67057338.

It is an arithmetic number, because the mean of its divisors is an integer number (134114672).

Almost surely, 2^402344013 is an apocalyptic number.

It is an amenable number.

402344013 is a deficient number, since it is larger than the sum of its proper divisors (134114675).

402344013 is a wasteful number, since it uses less digits than its factorization.

402344013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134114674.

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

The square root of 402344013 is about 20058.5147256720. The cubic root of 402344013 is about 738.2427338087.

Adding to 402344013 its reverse (310443204), we get a palindrome (712787217).

The spelling of 402344013 in words is "four hundred two million, three hundred forty-four thousand, thirteen".