402438412 has 12 divisors (see below), whose sum is σ = 704503800. Its totient is φ = 201151616.

The previous prime is 402438397. The next prime is 402438451. The reversal of 402438412 is 214834204.

It is a happy number.

It is an unprimeable number.

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, 2053 + ... + 28444.

It is an arithmetic number, because the mean of its divisors is an integer number (58708650).

Almost surely, 2^402438412 is an apocalyptic number.

It is an amenable number.

402438412 is a deficient number, since it is larger than the sum of its proper divisors (302065388).

402438412 is a wasteful number, since it uses less digits than its factorization.

402438412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33800 (or 33798 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 402438412 is about 20060.8676781439. The cubic root of 402438412 is about 738.3004654380.

It can be divided in two parts, 4024 and 38412, that added together give a square (42436 = 206²).

The spelling of 402438412 in words is "four hundred two million, four hundred thirty-eight thousand, four hundred twelve".