440242400461 has 2 divisors, whose sum is σ = 440242400462. Its totient is φ = 440242400460.

The previous prime is 440242400387. The next prime is 440242400473. The reversal of 440242400461 is 164004242044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387872366436 + 52370034025 = 622794^2 + 228845^2 .

It is a cyclic number.

It is not a de Polignac number, because 440242400461 - 2⁷ = 440242400333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440242400491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220121200230 + 220121200231.

It is an arithmetic number, because the mean of its divisors is an integer number (220121200231).

Almost surely, 2^440242400461 is an apocalyptic number.

It is an amenable number.

440242400461 is a deficient number, since it is larger than the sum of its proper divisors (1).

440242400461 is an equidigital number, since it uses as much as digits as its factorization.

440242400461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 31.

The spelling of 440242400461 in words is "four hundred forty billion, two hundred forty-two million, four hundred thousand, four hundred sixty-one".