844951013 has 2 divisors, whose sum is σ = 844951014. Its totient is φ = 844951012.

The previous prime is 844950947. The next prime is 844951021. The reversal of 844951013 is 310159448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829324804 + 15626209 = 28798^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 844951013 - 2¹² = 844946917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (844951043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422475506 + 422475507.

It is an arithmetic number, because the mean of its divisors is an integer number (422475507).

Almost surely, 2^844951013 is an apocalyptic number.

It is an amenable number.

844951013 is a deficient number, since it is larger than the sum of its proper divisors (1).

844951013 is an equidigital number, since it uses as much as digits as its factorization.

844951013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 844951013 is about 29068.0410932694. The cubic root of 844951013 is about 945.3889249505.

The spelling of 844951013 in words is "eight hundred forty-four million, nine hundred fifty-one thousand, thirteen".