1438297829 has 4 divisors (see below), whose sum is σ = 1438387500. Its totient is φ = 1438208160.

The previous prime is 1438297759. The next prime is 1438297831. The reversal of 1438297829 is 9287928341.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9287928341 = 491 ⋅18916351.

It can be written as a sum of positive squares in 2 ways, for example, as 524868100 + 913429729 = 22910^2 + 30223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438297829 - 2⁸ = 1438297573 is a prime.

It is a super-2 number, since 2×1438297829² = 4137401289812226482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438297129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13454 + ... + 55295.

It is an arithmetic number, because the mean of its divisors is an integer number (359596875).

Almost surely, 2^1438297829 is an apocalyptic number.

It is an amenable number.

1438297829 is a deficient number, since it is larger than the sum of its proper divisors (89671).

1438297829 is an equidigital number, since it uses as much as digits as its factorization.

1438297829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89670.

The product of its digits is 1741824, while the sum is 53.

The square root of 1438297829 is about 37924.8972180545. The cubic root of 1438297829 is about 1128.7981136023.

It can be divided in two parts, 14382 and 97829, that added together give a palindrome (112211).

The spelling of 1438297829 in words is "one billion, four hundred thirty-eight million, two hundred ninety-seven thousand, eight hundred twenty-nine".