1438629 has 4 divisors (see below), whose sum is σ = 1918176. Its totient is φ = 959084.

The previous prime is 1438609. The next prime is 1438643. The reversal of 1438629 is 9268341.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9268341 = 3 ⋅3089447.

It is a cyclic number.

It is not a de Polignac number, because 1438629 - 2⁷ = 1438501 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438609) 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, 239769 + ... + 239774.

It is an arithmetic number, because the mean of its divisors is an integer number (479544).

2^1438629 is an apocalyptic number.

It is an amenable number.

1438629 is a deficient number, since it is larger than the sum of its proper divisors (479547).

1438629 is an equidigital number, since it uses as much as digits as its factorization.

1438629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479546.

The product of its digits is 10368, while the sum is 33.

The square root of 1438629 is about 1199.4286139658. The cubic root of 1438629 is about 112.8884742974. Note that the first 3 decimals are identical.

The spelling of 1438629 in words is "one million, four hundred thirty-eight thousand, six hundred twenty-nine".