6440212341 has 16 divisors (see below), whose sum is σ = 9798923200. Its totient is φ = 4177434384.

The previous prime is 6440212333. The next prime is 6440212343. The reversal of 6440212341 is 1432120446.

It is a happy number.

6440212341 is a `hidden beast` number, since 6 + 440 + 212 + 3 + 4 + 1 = 666.

It is not a de Polignac number, because 6440212341 - 2³ = 6440212333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440212343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3222331 + ... + 3224328.

It is an arithmetic number, because the mean of its divisors is an integer number (612432700).

Almost surely, 2^6440212341 is an apocalyptic number.

It is an amenable number.

6440212341 is a deficient number, since it is larger than the sum of its proper divisors (3358710859).

6440212341 is a wasteful number, since it uses less digits than its factorization.

6440212341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446705 (or 6446699 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6440212341 is about 80250.9335833547. The cubic root of 6440212341 is about 1860.5159416782.

Adding to 6440212341 its reverse (1432120446), we get a palindrome (7872332787).

The spelling of 6440212341 in words is "six billion, four hundred forty million, two hundred twelve thousand, three hundred forty-one".