6440461003 has 2 divisors, whose sum is σ = 6440461004. Its totient is φ = 6440461002.

The previous prime is 6440460997. The next prime is 6440461031. The reversal of 6440461003 is 3001640446.

It is a happy number.

It is an a-pointer prime, because the next prime (6440461031) can be obtained adding 6440461003 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6440461003 is a prime.

It is not a weakly prime, because it can be changed into another prime (6440461073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220230501 + 3220230502.

It is an arithmetic number, because the mean of its divisors is an integer number (3220230502).

Almost surely, 2^6440461003 is an apocalyptic number.

6440461003 is a deficient number, since it is larger than the sum of its proper divisors (1).

6440461003 is an equidigital number, since it uses as much as digits as its factorization.

6440461003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6440461003 is about 80252.4828463269. The cubic root of 6440461003 is about 1860.5398867304.

The spelling of 6440461003 in words is "six billion, four hundred forty million, four hundred sixty-one thousand, three".