402443434 has 4 divisors (see below), whose sum is σ = 603665154. Its totient is φ = 201221716.

The previous prime is 402443429. The next prime is 402443441. The reversal of 402443434 is 434344204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 272415025 + 130028409 = 16505^2 + 11403^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610857 + ... + 100610860.

Almost surely, 2^402443434 is an apocalyptic number.

402443434 is a deficient number, since it is larger than the sum of its proper divisors (201221720).

402443434 is a wasteful number, since it uses less digits than its factorization.

402443434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201221719.

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 402443434 is about 20060.9928468159. The cubic root of 402443434 is about 738.3035364914.

Adding to 402443434 its reverse (434344204), we get a palindrome (836787638).

The spelling of 402443434 in words is "four hundred two million, four hundred forty-three thousand, four hundred thirty-four".