440979317 has 2 divisors, whose sum is σ = 440979318. Its totient is φ = 440979316.

The previous prime is 440979293. The next prime is 440979353. The reversal of 440979317 is 713979044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440958001 + 21316 = 20999^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 440979317 - 2¹² = 440975221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440979377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220489658 + 220489659.

It is an arithmetic number, because the mean of its divisors is an integer number (220489659).

Almost surely, 2^440979317 is an apocalyptic number.

It is an amenable number.

440979317 is a deficient number, since it is larger than the sum of its proper divisors (1).

440979317 is an equidigital number, since it uses as much as digits as its factorization.

440979317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 440979317 is about 20999.5075418449. The cubic root of 440979317 is about 761.1543612926.

The spelling of 440979317 in words is "four hundred forty million, nine hundred seventy-nine thousand, three hundred seventeen".