1429321217 has 2 divisors, whose sum is σ = 1429321218. Its totient is φ = 1429321216.

The previous prime is 1429321207. The next prime is 1429321259. The reversal of 1429321217 is 7121239241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1080042496 + 349278721 = 32864^2 + 18689^2 .

It is an emirp because it is prime and its reverse (7121239241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1429321217 is a prime.

It is a super-2 number, since 2×1429321217² = 4085918282732722178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1429321207) 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 as a sum of consecutive naturals, namely, 714660608 + 714660609.

It is an arithmetic number, because the mean of its divisors is an integer number (714660609).

Almost surely, 2^1429321217 is an apocalyptic number.

It is an amenable number.

1429321217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429321217 is an equidigital number, since it uses as much as digits as its factorization.

1429321217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 1429321217 is about 37806.3647683826. The cubic root of 1429321217 is about 1126.4448837617. Note that the first 3 decimals are identical.

The spelling of 1429321217 in words is "one billion, four hundred twenty-nine million, three hundred twenty-one thousand, two hundred seventeen".