440193449 has 2 divisors, whose sum is σ = 440193450. Its totient is φ = 440193448.

The previous prime is 440193437. The next prime is 440193473. The reversal of 440193449 is 944391044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263835049 + 176358400 = 16243^2 + 13280^2 .

It is a cyclic number.

It is not a de Polignac number, because 440193449 - 2⁴ = 440193433 is a prime.

It is not a weakly prime, because it can be changed into another prime (440193409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220096724 + 220096725.

It is an arithmetic number, because the mean of its divisors is an integer number (220096725).

Almost surely, 2^440193449 is an apocalyptic number.

It is an amenable number.

440193449 is a deficient number, since it is larger than the sum of its proper divisors (1).

440193449 is an equidigital number, since it uses as much as digits as its factorization.

440193449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 440193449 is about 20980.7876162932. The cubic root of 440193449 is about 760.7019420859.

The spelling of 440193449 in words is "four hundred forty million, one hundred ninety-three thousand, four hundred forty-nine".