402343404 has 12 divisors (see below), whose sum is σ = 938801304. Its totient is φ = 134114464.

The previous prime is 402343391. The next prime is 402343421. The reversal of 402343404 is 404343204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 16764297 + ... + 16764320.

It is an arithmetic number, because the mean of its divisors is an integer number (78233442).

Almost surely, 2^402343404 is an apocalyptic number.

It is an amenable number.

402343404 is an abundant number, since it is smaller than the sum of its proper divisors (536457900).

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

402343404 is a wasteful number, since it uses less digits than its factorization.

402343404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33528624 (or 33528622 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 402343404 is about 20058.4995450806. The cubic root of 402343404 is about 738.2423613330.

Adding to 402343404 its reverse (404343204), we get a palindrome (806686608).

The spelling of 402343404 in words is "four hundred two million, three hundred forty-three thousand, four hundred four".