6340440436 has 48 divisors (see below), whose sum is σ = 12378562560. Its totient is φ = 2816925920.

The previous prime is 6340440397. The next prime is 6340440461.

6340440436 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2031285 + ... + 2034403.

It is an arithmetic number, because the mean of its divisors is an integer number (257886720).

Almost surely, 2^6340440436 is an apocalyptic number.

It is an amenable number.

6340440436 is a deficient number, since it is larger than the sum of its proper divisors (6038122124).

6340440436 is a wasteful number, since it uses less digits than its factorization.

6340440436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164 (or 4162 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 6340440436 is about 79626.8826213861. The cubic root of 6340440436 is about 1850.8581785203.

The spelling of 6340440436 in words is "six billion, three hundred forty million, four hundred forty thousand, four hundred thirty-six".