1234400329 has 2 divisors, whose sum is σ = 1234400330. Its totient is φ = 1234400328.

The previous prime is 1234400239. The next prime is 1234400351. The reversal of 1234400329 is 9230044321.

Together with previous prime (1234400239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223110729 + 11289600 = 34973^2 + 3360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234400329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1234400297 and 1234400306.

It is not a weakly prime, because it can be changed into another prime (1234404329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617200164 + 617200165.

It is an arithmetic number, because the mean of its divisors is an integer number (617200165).

Almost surely, 2^1234400329 is an apocalyptic number.

It is an amenable number.

1234400329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234400329 is an equidigital number, since it uses as much as digits as its factorization.

1234400329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1234400329 is about 35134.0337706902. The cubic root of 1234400329 is about 1072.7174439349.

The spelling of 1234400329 in words is "one billion, two hundred thirty-four million, four hundred thousand, three hundred twenty-nine".