404040449 has 2 divisors, whose sum is σ = 404040450. Its totient is φ = 404040448.

The previous prime is 404040433. The next prime is 404040451. The reversal of 404040449 is 944040404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250652224 + 153388225 = 15832^2 + 12385^2 .

It is a cyclic number.

It is not a de Polignac number, because 404040449 - 2⁴ = 404040433 is a prime.

Together with 404040451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404040409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020224 + 202020225.

It is an arithmetic number, because the mean of its divisors is an integer number (202020225).

Almost surely, 2^404040449 is an apocalyptic number.

It is an amenable number.

404040449 is a deficient number, since it is larger than the sum of its proper divisors (1).

404040449 is an equidigital number, since it uses as much as digits as its factorization.

404040449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 404040449 is about 20100.7574235400. The cubic root of 404040449 is about 739.2788500413.

The spelling of 404040449 in words is "four hundred four million, forty thousand, four hundred forty-nine".