440554013 has 2 divisors, whose sum is σ = 440554014. Its totient is φ = 440554012.

The previous prime is 440554001. The next prime is 440554019. The reversal of 440554013 is 310455044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418529764 + 22024249 = 20458^2 + 4693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440554013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440554019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220277006 + 220277007.

It is an arithmetic number, because the mean of its divisors is an integer number (220277007).

Almost surely, 2^440554013 is an apocalyptic number.

It is an amenable number.

440554013 is a deficient number, since it is larger than the sum of its proper divisors (1).

440554013 is an equidigital number, since it uses as much as digits as its factorization.

440554013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 440554013 is about 20989.3785758416. The cubic root of 440554013 is about 760.9095832804.

The spelling of 440554013 in words is "four hundred forty million, five hundred fifty-four thousand, thirteen".