440154049 has 2 divisors, whose sum is σ = 440154050. Its totient is φ = 440154048.

The previous prime is 440154047. The next prime is 440154067. The reversal of 440154049 is 940451044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439657024 + 497025 = 20968^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 440154049 - 2¹ = 440154047 is a prime.

Together with 440154047, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 440154049.

It is not a weakly prime, because it can be changed into another prime (440154047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220077024 + 220077025.

It is an arithmetic number, because the mean of its divisors is an integer number (220077025).

Almost surely, 2^440154049 is an apocalyptic number.

It is an amenable number.

440154049 is a deficient number, since it is larger than the sum of its proper divisors (1).

440154049 is an equidigital number, since it uses as much as digits as its factorization.

440154049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 440154049 is about 20979.8486410174. The cubic root of 440154049 is about 760.6792455867.

The spelling of 440154049 in words is "four hundred forty million, one hundred fifty-four thousand, forty-nine".