440620897 has 2 divisors, whose sum is σ = 440620898. Its totient is φ = 440620896.

The previous prime is 440620889. The next prime is 440620927. The reversal of 440620897 is 798026044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262958656 + 177662241 = 16216^2 + 13329^2 .

It is a cyclic number.

It is not a de Polignac number, because 440620897 - 2³ = 440620889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440620597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220310448 + 220310449.

It is an arithmetic number, because the mean of its divisors is an integer number (220310449).

Almost surely, 2^440620897 is an apocalyptic number.

It is an amenable number.

440620897 is a deficient number, since it is larger than the sum of its proper divisors (1).

440620897 is an equidigital number, since it uses as much as digits as its factorization.

440620897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 440620897 is about 20990.9717974181. The cubic root of 440620897 is about 760.9480879055.

The spelling of 440620897 in words is "four hundred forty million, six hundred twenty thousand, eight hundred ninety-seven".