440122997 has 2 divisors, whose sum is σ = 440122998. Its totient is φ = 440122996.

The previous prime is 440122981. The next prime is 440122999. The reversal of 440122997 is 799221044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257089156 + 183033841 = 16034^2 + 13529^2 .

It is a cyclic number.

It is not a de Polignac number, because 440122997 - 2⁴ = 440122981 is a prime.

Together with 440122999, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440122997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440122999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220061498 + 220061499.

It is an arithmetic number, because the mean of its divisors is an integer number (220061499).

Almost surely, 2^440122997 is an apocalyptic number.

It is an amenable number.

440122997 is a deficient number, since it is larger than the sum of its proper divisors (1).

440122997 is an equidigital number, since it uses as much as digits as its factorization.

440122997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 440122997 is about 20979.1085844942. The cubic root of 440122997 is about 760.6613570259.

The spelling of 440122997 in words is "four hundred forty million, one hundred twenty-two thousand, nine hundred ninety-seven".