440619121 has 2 divisors, whose sum is σ = 440619122. Its totient is φ = 440619120.

The previous prime is 440619079. The next prime is 440619149. The reversal of 440619121 is 121916044.

It is an a-pointer prime, because the next prime (440619149) can be obtained adding 440619121 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321700096 + 118919025 = 17936^2 + 10905^2 .

It is a cyclic number.

It is not a de Polignac number, because 440619121 - 2⁷ = 440618993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440619121.

It is not a weakly prime, because it can be changed into another prime (440619181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220309560 + 220309561.

It is an arithmetic number, because the mean of its divisors is an integer number (220309561).

Almost surely, 2^440619121 is an apocalyptic number.

It is an amenable number.

440619121 is a deficient number, since it is larger than the sum of its proper divisors (1).

440619121 is an equidigital number, since it uses as much as digits as its factorization.

440619121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 440619121 is about 20990.9294934741. The cubic root of 440619121 is about 760.9470655258.

The spelling of 440619121 in words is "four hundred forty million, six hundred nineteen thousand, one hundred twenty-one".