440423101 has 2 divisors, whose sum is σ = 440423102. Its totient is φ = 440423100.

The previous prime is 440423083. The next prime is 440423117. The reversal of 440423101 is 101324044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438860601 + 1562500 = 20949^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 440423101 - 2⁹ = 440422589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440423161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220211550 + 220211551.

It is an arithmetic number, because the mean of its divisors is an integer number (220211551).

Almost surely, 2^440423101 is an apocalyptic number.

It is an amenable number.

440423101 is a deficient number, since it is larger than the sum of its proper divisors (1).

440423101 is an equidigital number, since it uses as much as digits as its factorization.

440423101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 440423101 is about 20986.2598144596. The cubic root of 440423101 is about 760.8342069279.

Adding to 440423101 its reverse (101324044), we get a palindrome (541747145).

The spelling of 440423101 in words is "four hundred forty million, four hundred twenty-three thousand, one hundred one".