1440347229 has 6 divisors (see below), whose sum is σ = 2080501566. Its totient is φ = 960231480.

The previous prime is 1440347177. The next prime is 1440347267. The reversal of 1440347229 is 9227430441.

It can be written as a sum of positive squares in only one way, i.e., 1284147225 + 156200004 = 35835^2 + 12498^2 .

It is not a de Polignac number, because 1440347229 - 2²⁷ = 1306129501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440347193 and 1440347202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440347299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80019282 + ... + 80019299.

It is an arithmetic number, because the mean of its divisors is an integer number (346750261).

Almost surely, 2^1440347229 is an apocalyptic number.

It is an amenable number.

1440347229 is a deficient number, since it is larger than the sum of its proper divisors (640154337).

1440347229 is a wasteful number, since it uses less digits than its factorization.

1440347229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160038587 (or 160038584 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1440347229 is about 37951.9067900415. The cubic root of 1440347229 is about 1129.3339926403. Note that the first 3 decimals are identical.

The spelling of 1440347229 in words is "one billion, four hundred forty million, three hundred forty-seven thousand, two hundred twenty-nine".