6434138 has 4 divisors (see below), whose sum is σ = 9651210. Its totient is φ = 3217068.

The previous prime is 6434137. The next prime is 6434167. The reversal of 6434138 is 8314346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8314346 = 2 ⋅4157173.

It can be written as a sum of positive squares in only one way, i.e., 4380649 + 2053489 = 2093^2 + 1433^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6434138.

It is not an unprimeable number, because it can be changed into a prime (6434137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608533 + ... + 1608536.

Almost surely, 2^6434138 is an apocalyptic number.

6434138 is a deficient number, since it is larger than the sum of its proper divisors (3217072).

6434138 is a wasteful number, since it uses less digits than its factorization.

6434138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217071.

The product of its digits is 6912, while the sum is 29.

The square root of 6434138 is about 2536.5602693411. The cubic root of 6434138 is about 185.9930817946.

The spelling of 6434138 in words is "six million, four hundred thirty-four thousand, one hundred thirty-eight".