440413663 has 2 divisors, whose sum is σ = 440413664. Its totient is φ = 440413662.

The previous prime is 440413651. The next prime is 440413667. The reversal of 440413663 is 366314044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440413663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440413667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220206831 + 220206832.

It is an arithmetic number, because the mean of its divisors is an integer number (220206832).

Almost surely, 2^440413663 is an apocalyptic number.

440413663 is a deficient number, since it is larger than the sum of its proper divisors (1).

440413663 is an equidigital number, since it uses as much as digits as its factorization.

440413663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 440413663 is about 20986.0349518436. The cubic root of 440413663 is about 760.8287721506.

The spelling of 440413663 in words is "four hundred forty million, four hundred thirteen thousand, six hundred sixty-three".