1428744329 has 4 divisors (see below), whose sum is σ = 1432154640. Its totient is φ = 1425334020.

The previous prime is 1428744319. The next prime is 1428744341. The reversal of 1428744329 is 9234478241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1428744329 - 2¹² = 1428740233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428744329.

It is not an unprimeable number, because it can be changed into a prime (1428744319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704527 + ... + 1705364.

It is an arithmetic number, because the mean of its divisors is an integer number (358038660).

Almost surely, 2^1428744329 is an apocalyptic number.

It is an amenable number.

1428744329 is a deficient number, since it is larger than the sum of its proper divisors (3410311).

1428744329 is an equidigital number, since it uses as much as digits as its factorization.

1428744329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410310.

The product of its digits is 387072, while the sum is 44.

The square root of 1428744329 is about 37798.7344893979. The cubic root of 1428744329 is about 1126.2933153169.

The spelling of 1428744329 in words is "one billion, four hundred twenty-eight million, seven hundred forty-four thousand, three hundred twenty-nine".