440779513 has 2 divisors, whose sum is σ = 440779514. Its totient is φ = 440779512.

The previous prime is 440779477. The next prime is 440779523. The reversal of 440779513 is 315977044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317302969 + 123476544 = 17813^2 + 11112^2 .

It is a cyclic number.

It is not a de Polignac number, because 440779513 - 2¹³ = 440771321 is a prime.

It is not a weakly prime, because it can be changed into another prime (440779523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220389756 + 220389757.

It is an arithmetic number, because the mean of its divisors is an integer number (220389757).

Almost surely, 2^440779513 is an apocalyptic number.

It is an amenable number.

440779513 is a deficient number, since it is larger than the sum of its proper divisors (1).

440779513 is an equidigital number, since it uses as much as digits as its factorization.

440779513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 440779513 is about 20994.7496531871. The cubic root of 440779513 is about 761.0393863910.

The spelling of 440779513 in words is "four hundred forty million, seven hundred seventy-nine thousand, five hundred thirteen".