1234008729 has 16 divisors (see below), whose sum is σ = 1844937600. Its totient is φ = 815123088.

The previous prime is 1234008689. The next prime is 1234008757. The reversal of 1234008729 is 9278004321.

It is not a de Polignac number, because 1234008729 - 2²⁹ = 697137817 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1234008693 and 1234008702.

It is not an unprimeable number, because it can be changed into a prime (1234008799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206709 + ... + 212594.

It is an arithmetic number, because the mean of its divisors is an integer number (115308600).

Almost surely, 2^1234008729 is an apocalyptic number.

It is an amenable number.

1234008729 is a deficient number, since it is larger than the sum of its proper divisors (610928871).

1234008729 is a wasteful number, since it uses less digits than its factorization.

1234008729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419421 (or 419415 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1234008729 is about 35128.4603847080. The cubic root of 1234008729 is about 1072.6039959795.

The spelling of 1234008729 in words is "one billion, two hundred thirty-four million, eight thousand, seven hundred twenty-nine".