1426439449 has 4 divisors (see below), whose sum is σ = 1426696740. Its totient is φ = 1426182160.

The previous prime is 1426439423. The next prime is 1426439467. The reversal of 1426439449 is 9449346241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 245486224 + 1180953225 = 15668^2 + 34365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426439449 - 2¹¹ = 1426437401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1426439399 and 1426439408.

It is not an unprimeable number, because it can be changed into a prime (1426439249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120142 + ... + 131479.

It is an arithmetic number, because the mean of its divisors is an integer number (356674185).

Almost surely, 2^1426439449 is an apocalyptic number.

It is an amenable number.

1426439449 is a deficient number, since it is larger than the sum of its proper divisors (257291).

1426439449 is an equidigital number, since it uses as much as digits as its factorization.

1426439449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257290.

The product of its digits is 746496, while the sum is 46.

The square root of 1426439449 is about 37768.2333317300. The cubic root of 1426439449 is about 1125.6873360911.

The spelling of 1426439449 in words is "one billion, four hundred twenty-six million, four hundred thirty-nine thousand, four hundred forty-nine".