4406780813 has 2 divisors, whose sum is σ = 4406780814. Its totient is φ = 4406780812.

The previous prime is 4406780809. The next prime is 4406780831. The reversal of 4406780813 is 3180876044.

Together with next prime (4406780831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4403384164 + 3396649 = 66358^2 + 1843^2 .

It is a cyclic number.

It is not a de Polignac number, because 4406780813 - 2² = 4406780809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4406780863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2203390406 + 2203390407.

It is an arithmetic number, because the mean of its divisors is an integer number (2203390407).

Almost surely, 2^4406780813 is an apocalyptic number.

It is an amenable number.

4406780813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4406780813 is an equidigital number, since it uses as much as digits as its factorization.

4406780813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 4406780813 is about 66383.5884311778. The cubic root of 4406780813 is about 1639.4838764786.

The spelling of 4406780813 in words is "four billion, four hundred six million, seven hundred eighty thousand, eight hundred thirteen".