440245697 has 2 divisors, whose sum is σ = 440245698. Its totient is φ = 440245696.

The previous prime is 440245661. The next prime is 440245711. The reversal of 440245697 is 796542044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296149681 + 144096016 = 17209^2 + 12004^2 .

It is a cyclic number.

It is not a de Polignac number, because 440245697 - 2¹² = 440241601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440245657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220122848 + 220122849.

It is an arithmetic number, because the mean of its divisors is an integer number (220122849).

Almost surely, 2^440245697 is an apocalyptic number.

It is an amenable number.

440245697 is a deficient number, since it is larger than the sum of its proper divisors (1).

440245697 is an equidigital number, since it uses as much as digits as its factorization.

440245697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 440245697 is about 20982.0327184951. The cubic root of 440245697 is about 760.7320376289.

The spelling of 440245697 in words is "four hundred forty million, two hundred forty-five thousand, six hundred ninety-seven".