1629343399 has 4 divisors (see below), whose sum is σ = 1633882320. Its totient is φ = 1624804480.

The previous prime is 1629343307. The next prime is 1629343409. The reversal of 1629343399 is 9933439261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9933439261 = 3631 ⋅2735731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1629343399 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629343099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268922 + ... + 2269639.

It is an arithmetic number, because the mean of its divisors is an integer number (408470580).

Almost surely, 2^1629343399 is an apocalyptic number.

1629343399 is a deficient number, since it is larger than the sum of its proper divisors (4538921).

1629343399 is an equidigital number, since it uses as much as digits as its factorization.

1629343399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538920.

The product of its digits is 944784, while the sum is 49.

The square root of 1629343399 is about 40365.1260248249. The cubic root of 1629343399 is about 1176.7138771015.

The spelling of 1629343399 in words is "one billion, six hundred twenty-nine million, three hundred forty-three thousand, three hundred ninety-nine".