6344140436 has 24 divisors (see below), whose sum is σ = 11355755040. Its totient is φ = 3100261472.

The previous prime is 6344140381. The next prime is 6344140459. The reversal of 6344140436 is 6340414436.

It is a junction number, because it is equal to n+sod(n) for n = 6344140396 and 6344140405.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 36866 + ... + 118521.

It is an arithmetic number, because the mean of its divisors is an integer number (473156460).

Almost surely, 2^6344140436 is an apocalyptic number.

It is an amenable number.

6344140436 is a deficient number, since it is larger than the sum of its proper divisors (5011614604).

6344140436 is a wasteful number, since it uses less digits than its factorization.

6344140436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155623 (or 155621 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 6344140436 is about 79650.1125925130. The cubic root of 6344140436 is about 1851.2181347759.

The spelling of 6344140436 in words is "six billion, three hundred forty-four million, one hundred forty thousand, four hundred thirty-six".