440851013 has 2 divisors, whose sum is σ = 440851014. Its totient is φ = 440851012.

The previous prime is 440850997. The next prime is 440851039. The reversal of 440851013 is 310158044.

It is an a-pointer prime, because the next prime (440851039) can be obtained adding 440851013 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349017124 + 91833889 = 18682^2 + 9583^2 .

It is a cyclic number.

It is not a de Polignac number, because 440851013 - 2⁴ = 440850997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440851063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220425506 + 220425507.

It is an arithmetic number, because the mean of its divisors is an integer number (220425507).

Almost surely, 2^440851013 is an apocalyptic number.

It is an amenable number.

440851013 is a deficient number, since it is larger than the sum of its proper divisors (1).

440851013 is an equidigital number, since it uses as much as digits as its factorization.

440851013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 440851013 is about 20996.4523908207. The cubic root of 440851013 is about 761.0805342306.

The spelling of 440851013 in words is "four hundred forty million, eight hundred fifty-one thousand, thirteen".