440669797 has 2 divisors, whose sum is σ = 440669798. Its totient is φ = 440669796.

The previous prime is 440669777. The next prime is 440669813. The reversal of 440669797 is 797966044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438734916 + 1934881 = 20946^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 440669797 - 2²³ = 432281189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440669707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220334898 + 220334899.

It is an arithmetic number, because the mean of its divisors is an integer number (220334899).

Almost surely, 2^440669797 is an apocalyptic number.

It is an amenable number.

440669797 is a deficient number, since it is larger than the sum of its proper divisors (1).

440669797 is an equidigital number, since it uses as much as digits as its factorization.

440669797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 440669797 is about 20992.1365515757. The cubic root of 440669797 is about 760.9762368088.

The spelling of 440669797 in words is "four hundred forty million, six hundred sixty-nine thousand, seven hundred ninety-seven".