440442449 has 2 divisors, whose sum is σ = 440442450. Its totient is φ = 440442448.

The previous prime is 440442427. The next prime is 440442461. The reversal of 440442449 is 944244044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283316224 + 157126225 = 16832^2 + 12535^2 .

It is a cyclic number.

It is not a de Polignac number, because 440442449 - 2¹⁶ = 440376913 is a prime.

It is a super-2 number, since 2×440442449² = 387979101762235202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440442469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220221224 + 220221225.

It is an arithmetic number, because the mean of its divisors is an integer number (220221225).

Almost surely, 2^440442449 is an apocalyptic number.

It is an amenable number.

440442449 is a deficient number, since it is larger than the sum of its proper divisors (1).

440442449 is an equidigital number, since it uses as much as digits as its factorization.

440442449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 35.

The square root of 440442449 is about 20986.7207776727. The cubic root of 440442449 is about 760.8453480365.

The spelling of 440442449 in words is "four hundred forty million, four hundred forty-two thousand, four hundred forty-nine".